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2cd19c05d0
zig/test/compile_errors.zig
Andrew Kelley 2cd19c05d0 stage1: remove buggy "unable to inline function" compile error 
We still want this compile error but I'm giving up on implementing it
correctly in stage1. It's been buggy and has false positives sometimes.

I left the test cases there, but commented out, so that when we go
through the stage1 compile error cases and get coverage for them in
stage2 we can reactivate the test cases.

closes #2154
2020-08-15 09:53:39 -07:00

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const tests = @import("tests.zig");
const std = @import("std");
pub fn addCases(cases: *tests.CompileErrorContext) void {
cases.addTest("duplicate/unused labels",
\\comptime {
\\ blk: { blk: while (false) {} }
\\ blk: while (false) { blk: for (@as([0]void, undefined)) |_| {} }
\\ blk: for (@as([0]void, undefined)) |_| { blk: {} }
\\}
\\comptime {
\\ blk: {}
\\ blk: while(false) {}
\\ blk: for(@as([0]void, undefined)) |_| {}
\\}
, &[_][]const u8{
"tmp.zig:2:17: error: redeclaration of label 'blk'",
"tmp.zig:2:10: note: previous declaration is here",
"tmp.zig:3:31: error: redeclaration of label 'blk'",
"tmp.zig:3:10: note: previous declaration is here",
"tmp.zig:4:51: error: redeclaration of label 'blk'",
"tmp.zig:4:10: note: previous declaration is here",
"tmp.zig:7:10: error: unused block label",
"tmp.zig:8:10: error: unused while label",
"tmp.zig:9:10: error: unused for label",
});
cases.addTest("@alignCast of zero sized types",
\\export fn foo() void {
\\ const a: *void = undefined;
\\ _ = @alignCast(2, a);
\\}
\\export fn bar() void {
\\ const a: ?*void = undefined;
\\ _ = @alignCast(2, a);
\\}
\\export fn baz() void {
\\ const a: []void = undefined;
\\ _ = @alignCast(2, a);
\\}
\\export fn qux() void {
\\ const a = struct {
\\ fn a(comptime b: u32) void {}
\\ }.a;
\\ _ = @alignCast(2, a);
\\}
, &[_][]const u8{
"tmp.zig:3:23: error: cannot adjust alignment of zero sized type '*void'",
"tmp.zig:7:23: error: cannot adjust alignment of zero sized type '?*void'",
"tmp.zig:11:23: error: cannot adjust alignment of zero sized type '[]void'",
"tmp.zig:17:23: error: cannot adjust alignment of zero sized type 'fn(u32) anytype'",
});
cases.addTest("invalid pointer with @Type",
\\export fn entry() void {
\\ _ = @Type(.{ .Pointer = .{
\\ .size = .One,
\\ .is_const = false,
\\ .is_volatile = false,
\\ .alignment = 1,
\\ .child = u8,
\\ .is_allowzero = false,
\\ .sentinel = 0,
\\ }});
\\}
, &[_][]const u8{
"tmp.zig:2:16: error: sentinels are only allowed on slices and unknown-length pointers",
});
cases.addTest("helpful return type error message",
\\export fn foo() u32 {
\\ return error.Ohno;
\\}
\\fn bar() !u32 {
\\ return error.Ohno;
\\}
\\export fn baz() void {
\\ try bar();
\\}
\\export fn quux() u32 {
\\ return bar();
\\}
, &[_][]const u8{
"tmp.zig:2:17: error: expected type 'u32', found 'error{Ohno}'",
"tmp.zig:1:17: note: function cannot return an error",
"tmp.zig:8:5: error: expected type 'void', found '@TypeOf(bar).ReturnType.ErrorSet'",
"tmp.zig:7:17: note: function cannot return an error",
"tmp.zig:11:15: error: expected type 'u32', found '@TypeOf(bar).ReturnType.ErrorSet!u32'",
"tmp.zig:10:18: note: function cannot return an error",
});
cases.addTest("int/float conversion to comptime_int/float",
\\export fn foo() void {
\\ var a: f32 = 2;
\\ _ = @floatToInt(comptime_int, a);
\\}
\\export fn bar() void {
\\ var a: u32 = 2;
\\ _ = @intToFloat(comptime_float, a);
\\}
, &[_][]const u8{
"tmp.zig:3:35: error: unable to evaluate constant expression",
"tmp.zig:3:9: note: referenced here",
"tmp.zig:7:37: error: unable to evaluate constant expression",
"tmp.zig:7:9: note: referenced here",
});
cases.add("extern variable has no type",
\\extern var foo;
\\pub export fn entry() void {
\\ foo;
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: unable to infer variable type",
});
cases.add("@src outside function",
\\comptime {
\\ @src();
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: @src outside function",
});
cases.add("call assigned to constant",
\\const Foo = struct {
\\ x: i32,
\\};
\\fn foo() Foo {
\\ return .{ .x = 42 };
\\}
\\fn bar(val: anytype) Foo {
\\ return .{ .x = val };
\\}
\\export fn entry() void {
\\ const baz: Foo = undefined;
\\ baz = foo();
\\}
\\export fn entry1() void {
\\ const baz: Foo = undefined;
\\ baz = bar(42);
\\}
, &[_][]const u8{
"tmp.zig:12:14: error: cannot assign to constant",
"tmp.zig:16:14: error: cannot assign to constant",
});
cases.add("invalid pointer syntax",
\\export fn foo() void {
\\ var guid: *:0 const u8 = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: sentinels are only allowed on unknown-length pointers",
});
cases.add("declaration between fields",
\\const S = struct {
\\ const foo = 2;
\\ const bar = 2;
\\ const baz = 2;
\\ a: usize,
\\ const foo1 = 2;
\\ const bar1 = 2;
\\ const baz1 = 2;
\\ b: usize,
\\};
\\comptime {
\\ _ = S;
\\}
, &[_][]const u8{
"tmp.zig:6:5: error: declarations are not allowed between container fields",
});
cases.add("non-extern function with var args",
\\fn foo(args: ...) void {}
\\export fn entry() void {
\\ foo();
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: non-extern function is variadic",
});
cases.addTest("invalid int casts",
\\export fn foo() void {
\\ var a: u32 = 2;
\\ _ = @intCast(comptime_int, a);
\\}
\\export fn bar() void {
\\ var a: u32 = 2;
\\ _ = @intToFloat(u32, a);
\\}
\\export fn baz() void {
\\ var a: u32 = 2;
\\ _ = @floatToInt(u32, a);
\\}
\\export fn qux() void {
\\ var a: f32 = 2;
\\ _ = @intCast(u32, a);
\\}
, &[_][]const u8{
"tmp.zig:3:32: error: unable to evaluate constant expression",
"tmp.zig:3:9: note: referenced here",
"tmp.zig:7:21: error: expected float type, found 'u32'",
"tmp.zig:7:9: note: referenced here",
"tmp.zig:11:26: error: expected float type, found 'u32'",
"tmp.zig:11:9: note: referenced here",
"tmp.zig:15:23: error: expected integer type, found 'f32'",
"tmp.zig:15:9: note: referenced here",
});
cases.addTest("invalid float casts",
\\export fn foo() void {
\\ var a: f32 = 2;
\\ _ = @floatCast(comptime_float, a);
\\}
\\export fn bar() void {
\\ var a: f32 = 2;
\\ _ = @floatToInt(f32, a);
\\}
\\export fn baz() void {
\\ var a: f32 = 2;
\\ _ = @intToFloat(f32, a);
\\}
\\export fn qux() void {
\\ var a: u32 = 2;
\\ _ = @floatCast(f32, a);
\\}
, &[_][]const u8{
"tmp.zig:3:36: error: unable to evaluate constant expression",
"tmp.zig:3:9: note: referenced here",
"tmp.zig:7:21: error: expected integer type, found 'f32'",
"tmp.zig:7:9: note: referenced here",
"tmp.zig:11:26: error: expected int type, found 'f32'",
"tmp.zig:11:9: note: referenced here",
"tmp.zig:15:25: error: expected float type, found 'u32'",
"tmp.zig:15:9: note: referenced here",
});
cases.addTest("invalid assignments",
\\export fn entry1() void {
\\ var a: []const u8 = "foo";
\\ a[0..2] = "bar";
\\}
\\export fn entry2() void {
\\ var a: u8 = 2;
\\ a + 2 = 3;
\\}
\\export fn entry4() void {
\\ 2 + 2 = 3;
\\}
, &[_][]const u8{
"tmp.zig:3:6: error: invalid left-hand side to assignment",
"tmp.zig:7:7: error: invalid left-hand side to assignment",
"tmp.zig:10:7: error: invalid left-hand side to assignment",
});
cases.addTest("reassign to array parameter",
\\fn reassign(a: [3]f32) void {
\\ a = [3]f32{4, 5, 6};
\\}
\\export fn entry() void {
\\ reassign(.{1, 2, 3});
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: cannot assign to constant",
});
cases.addTest("reassign to slice parameter",
\\pub fn reassign(s: []const u8) void {
\\ s = s[0..];
\\}
\\export fn entry() void {
\\ reassign("foo");
\\}
, &[_][]const u8{
"tmp.zig:2:10: error: cannot assign to constant",
});
cases.addTest("reassign to struct parameter",
\\const S = struct {
\\ x: u32,
\\};
\\fn reassign(s: S) void {
\\ s = S{.x = 2};
\\}
\\export fn entry() void {
\\ reassign(S{.x = 3});
\\}
, &[_][]const u8{
"tmp.zig:5:10: error: cannot assign to constant",
});
cases.addTest("reference to const data",
\\export fn foo() void {
\\ var ptr = &[_]u8{0,0,0,0};
\\ ptr[1] = 2;
\\}
\\export fn bar() void {
\\ var ptr = &@as(u32, 2);
\\ ptr.* = 2;
\\}
\\export fn baz() void {
\\ var ptr = &true;
\\ ptr.* = false;
\\}
\\export fn qux() void {
\\ const S = struct{
\\ x: usize,
\\ y: usize,
\\ };
\\ var ptr = &S{.x=1,.y=2};
\\ ptr.x = 2;
\\}
, &[_][]const u8{
"tmp.zig:3:14: error: cannot assign to constant",
"tmp.zig:7:13: error: cannot assign to constant",
"tmp.zig:11:13: error: cannot assign to constant",
"tmp.zig:19:13: error: cannot assign to constant",
});
cases.addTest("cast between ?T where T is not a pointer",
\\pub const fnty1 = ?fn (i8) void;
\\pub const fnty2 = ?fn (u64) void;
\\export fn entry() void {
\\ var a: fnty1 = undefined;
\\ var b: fnty2 = undefined;
\\ a = b;
\\}
, &[_][]const u8{
"tmp.zig:6:9: error: expected type '?fn(i8) void', found '?fn(u64) void'",
"tmp.zig:6:9: note: optional type child 'fn(u64) void' cannot cast into optional type child 'fn(i8) void'",
});
cases.addTest("unused variable error on errdefer",
\\fn foo() !void {
\\ errdefer |a| unreachable;
\\ return error.A;
\\}
\\export fn entry() void {
\\ foo() catch unreachable;
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: unused variable: 'a'",
});
cases.addTest("comparison of non-tagged union and enum literal",
\\export fn entry() void {
\\ const U = union { A: u32, B: u64 };
\\ var u = U{ .A = 42 };
\\ var ok = u == .A;
\\}
, &[_][]const u8{
"tmp.zig:4:16: error: comparison of union and enum literal is only valid for tagged union types",
"tmp.zig:2:15: note: type U is not a tagged union",
});
cases.addTest("shift on type with non-power-of-two size",
\\export fn entry() void {
\\ const S = struct {
\\ fn a() void {
\\ var x: u24 = 42;
\\ _ = x >> 24;
\\ }
\\ fn b() void {
\\ var x: u24 = 42;
\\ _ = x << 24;
\\ }
\\ fn c() void {
\\ var x: u24 = 42;
\\ _ = @shlExact(x, 24);
\\ }
\\ fn d() void {
\\ var x: u24 = 42;
\\ _ = @shrExact(x, 24);
\\ }
\\ };
\\ S.a();
\\ S.b();
\\ S.c();
\\ S.d();
\\}
, &[_][]const u8{
"tmp.zig:5:19: error: RHS of shift is too large for LHS type",
"tmp.zig:9:19: error: RHS of shift is too large for LHS type",
"tmp.zig:13:17: error: RHS of shift is too large for LHS type",
"tmp.zig:17:17: error: RHS of shift is too large for LHS type",
});
cases.addTest("combination of nosuspend and async",
\\export fn entry() void {
\\ nosuspend {
\\ const bar = async foo();
\\ suspend;
\\ resume bar;
\\ }
\\}
\\fn foo() void {}
, &[_][]const u8{
"tmp.zig:3:21: error: async call in nosuspend scope",
"tmp.zig:4:9: error: suspend in nosuspend scope",
"tmp.zig:5:9: error: resume in nosuspend scope",
});
cases.add("atomicrmw with bool op not .Xchg",
\\export fn entry() void {
\\ var x = false;
\\ _ = @atomicRmw(bool, &x, .Add, true, .SeqCst);
\\}
, &[_][]const u8{
"tmp.zig:3:30: error: @atomicRmw with bool only allowed with .Xchg",
});
cases.addTest("@TypeOf with no arguments",
\\export fn entry() void {
\\ _ = @TypeOf();
\\}
, &[_][]const u8{
"tmp.zig:2:9: error: expected at least 1 argument, found 0",
});
cases.addTest("@TypeOf with incompatible arguments",
\\export fn entry() void {
\\ var var_1: f32 = undefined;
\\ var var_2: u32 = undefined;
\\ _ = @TypeOf(var_1, var_2);
\\}
, &[_][]const u8{
"tmp.zig:4:9: error: incompatible types: 'f32' and 'u32'",
});
cases.addTest("type mismatch with tuple concatenation",
\\export fn entry() void {
\\ var x = .{};
\\ x = x ++ .{ 1, 2, 3 };
\\}
, &[_][]const u8{
"tmp.zig:3:11: error: expected type 'struct:2:14', found 'struct:3:11'",
});
cases.addTest("@tagName on invalid value of non-exhaustive enum",
\\test "enum" {
\\ const E = enum(u8) {A, B, _};
\\ _ = @tagName(@intToEnum(E, 5));
\\}
, &[_][]const u8{
"tmp.zig:3:18: error: no tag by value 5",
});
cases.addTest("@ptrToInt with pointer to zero-sized type",
\\export fn entry() void {
\\ var pointer: ?*u0 = null;
\\ var x = @ptrToInt(pointer);
\\}
, &[_][]const u8{
"tmp.zig:3:23: error: pointer to size 0 type has no address",
});
cases.addTest("access invalid @typeInfo decl",
\\const A = B;
\\test "Crash" {
\\ _ = @typeInfo(@This()).Struct.decls[0];
\\}
, &[_][]const u8{
"tmp.zig:1:11: error: use of undeclared identifier 'B'",
});
cases.addTest("reject extern function definitions with body",
\\extern "c" fn definitelyNotInLibC(a: i32, b: i32) i32 {
\\ return a + b;
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: extern functions have no body",
});
cases.addTest("duplicate field in anonymous struct literal",
\\export fn entry() void {
\\ const anon = .{
\\ .inner = .{
\\ .a = .{
\\ .something = "text",
\\ },
\\ .a = .{},
\\ },
\\ };
\\}
, &[_][]const u8{
"tmp.zig:7:13: error: duplicate field",
"tmp.zig:4:13: note: other field here",
});
cases.addTest("type mismatch in C prototype with varargs",
\\const fn_ty = ?fn ([*c]u8, ...) callconv(.C) void;
\\extern fn fn_decl(fmt: [*:0]u8, ...) void;
\\
\\export fn main() void {
\\ const x: fn_ty = fn_decl;
\\}
, &[_][]const u8{
"tmp.zig:5:22: error: expected type 'fn([*c]u8, ...) callconv(.C) void', found 'fn([*:0]u8, ...) callconv(.C) void'",
});
cases.addTest("dependency loop in top-level decl with @TypeInfo when accessing the decls",
\\export const foo = @typeInfo(@This()).Struct.decls;
, &[_][]const u8{
"tmp.zig:1:20: error: dependency loop detected",
"tmp.zig:1:45: note: referenced here",
});
cases.add("function call assigned to incorrect type",
\\export fn entry() void {
\\ var arr: [4]f32 = undefined;
\\ arr = concat();
\\}
\\fn concat() [16]f32 {
\\ return [1]f32{0}**16;
\\}
, &[_][]const u8{
"tmp.zig:3:17: error: expected type '[4]f32', found '[16]f32'",
});
cases.add("generic function call assigned to incorrect type",
\\pub export fn entry() void {
\\ var res: []i32 = undefined;
\\ res = myAlloc(i32);
\\}
\\fn myAlloc(comptime arg: type) anyerror!arg{
\\ unreachable;
\\}
, &[_][]const u8{
"tmp.zig:3:18: error: expected type '[]i32', found 'anyerror!i32",
});
cases.addTest("non-exhaustive enums",
\\const A = enum {
\\ a,
\\ b,
\\ _ = 1,
\\};
\\const B = enum(u1) {
\\ a,
\\ _,
\\ b,
\\};
\\const C = enum(u1) {
\\ a,
\\ b,
\\ _,
\\};
\\pub export fn entry() void {
\\ _ = A;
\\ _ = B;
\\ _ = C;
\\}
, &[_][]const u8{
"tmp.zig:4:5: error: non-exhaustive enum must specify size",
"error: value assigned to '_' field of non-exhaustive enum",
"error: non-exhaustive enum specifies every value",
"error: '_' field of non-exhaustive enum must be last",
});
cases.addTest("switching with non-exhaustive enums",
\\const E = enum(u8) {
\\ a,
\\ b,
\\ _,
\\};
\\pub export fn entry() void {
\\ var e: E = .b;
\\ switch (e) { // error: switch not handling the tag `b`
\\ .a => {},
\\ _ => {},
\\ }
\\ switch (e) { // error: switch on non-exhaustive enum must include `else` or `_` prong
\\ .a => {},
\\ .b => {},
\\ }
\\}
, &[_][]const u8{
"tmp.zig:8:5: error: enumeration value 'E.b' not handled in switch",
"tmp.zig:12:5: error: switch on non-exhaustive enum must include `else` or `_` prong",
});
cases.add("switch expression - unreachable else prong (bool)",
\\fn foo(x: bool) void {
\\ switch (x) {
\\ true => {},
\\ false => {},
\\ else => {},
\\ }
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:5:9: error: unreachable else prong, all cases already handled",
});
cases.add("switch expression - unreachable else prong (u1)",
\\fn foo(x: u1) void {
\\ switch (x) {
\\ 0 => {},
\\ 1 => {},
\\ else => {},
\\ }
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:5:9: error: unreachable else prong, all cases already handled",
});
cases.add("switch expression - unreachable else prong (u2)",
\\fn foo(x: u2) void {
\\ switch (x) {
\\ 0 => {},
\\ 1 => {},
\\ 2 => {},
\\ 3 => {},
\\ else => {},
\\ }
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:7:9: error: unreachable else prong, all cases already handled",
});
cases.add("switch expression - unreachable else prong (range u8)",
\\fn foo(x: u8) void {
\\ switch (x) {
\\ 0 => {},
\\ 1 => {},
\\ 2 => {},
\\ 3 => {},
\\ 4...255 => {},
\\ else => {},
\\ }
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:8:9: error: unreachable else prong, all cases already handled",
});
cases.add("switch expression - unreachable else prong (range i8)",
\\fn foo(x: i8) void {
\\ switch (x) {
\\ -128...0 => {},
\\ 1 => {},
\\ 2 => {},
\\ 3 => {},
\\ 4...127 => {},
\\ else => {},
\\ }
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:8:9: error: unreachable else prong, all cases already handled",
});
cases.add("switch expression - unreachable else prong (enum)",
\\const TestEnum = enum{ T1, T2 };
\\
\\fn err(x: u8) TestEnum {
\\ switch (x) {
\\ 0 => return TestEnum.T1,
\\ else => return TestEnum.T2,
\\ }
\\}
\\
\\fn foo(x: u8) void {
\\ switch (err(x)) {
\\ TestEnum.T1 => {},
\\ TestEnum.T2 => {},
\\ else => {},
\\ }
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:14:9: error: unreachable else prong, all cases already handled",
});
cases.addTest("@export with empty name string",
\\pub export fn entry() void { }
\\comptime {
\\ @export(entry, .{ .name = "" });
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: exported symbol name cannot be empty",
});
cases.addTest("switch ranges endpoints are validated",
\\pub export fn entry() void {
\\ var x: i32 = 0;
\\ switch (x) {
\\ 6...1 => {},
\\ -1...-5 => {},
\\ else => unreachable,
\\ }
\\}
, &[_][]const u8{
"tmp.zig:4:9: error: range start value is greater than the end value",
"tmp.zig:5:9: error: range start value is greater than the end value",
});
cases.addTest("errors in for loop bodies are propagated",
\\pub export fn entry() void {
\\ var arr: [100]u8 = undefined;
\\ for (arr) |bits| _ = @popCount(bits);
\\}
, &[_][]const u8{
"tmp.zig:3:26: error: expected 2 arguments, found 1",
});
cases.addTest("@call rejects non comptime-known fn - always_inline",
\\pub export fn entry() void {
\\ var call_me: fn () void = undefined;
\\ @call(.{ .modifier = .always_inline }, call_me, .{});
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: the specified modifier requires a comptime-known function",
});
cases.addTest("@call rejects non comptime-known fn - compile_time",
\\pub export fn entry() void {
\\ var call_me: fn () void = undefined;
\\ @call(.{ .modifier = .compile_time }, call_me, .{});
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: the specified modifier requires a comptime-known function",
});
cases.addTest("error in struct initializer doesn't crash the compiler",
\\pub export fn entry() void {
\\ const bitfield = struct {
\\ e: u8,
\\ e: u8,
\\ };
\\ var a = .{@sizeOf(bitfield)};
\\}
, &[_][]const u8{
"tmp.zig:4:9: error: duplicate struct field: 'e'",
});
cases.addTest("repeated invalid field access to generic function returning type crashes compiler. #2655",
\\pub fn A() type {
\\ return Q;
\\}
\\test "1" {
\\ _ = A().a;
\\ _ = A().a;
\\}
, &[_][]const u8{
"tmp.zig:2:12: error: use of undeclared identifier 'Q'",
});
cases.add("bitCast to enum type",
\\export fn entry() void {
\\ const y = @bitCast(enum(u32) { a, b }, @as(u32, 3));
\\}
, &[_][]const u8{
"tmp.zig:2:24: error: cannot cast a value of type 'y'",
});
cases.add("comparing against undefined produces undefined value",
\\export fn entry() void {
\\ if (2 == undefined) {}
\\}
, &[_][]const u8{
"tmp.zig:2:11: error: use of undefined value here causes undefined behavior",
});
cases.add("comptime ptrcast of zero-sized type",
\\fn foo() void {
\\ const node: struct {} = undefined;
\\ const vla_ptr = @ptrCast([*]const u8, &node);
\\}
\\comptime { foo(); }
, &[_][]const u8{
"tmp.zig:3:21: error: '*const struct:2:17' and '[*]const u8' do not have the same in-memory representation",
});
cases.add("slice sentinel mismatch",
\\fn foo() [:0]u8 {
\\ var x: []u8 = undefined;
\\ return x;
\\}
\\comptime { _ = foo; }
, &[_][]const u8{
"tmp.zig:3:12: error: expected type '[:0]u8', found '[]u8'",
"tmp.zig:3:12: note: destination pointer requires a terminating '0' sentinel",
});
cases.add("cmpxchg with float",
\\export fn entry() void {
\\ var x: f32 = 0;
\\ _ = @cmpxchgWeak(f32, &x, 1, 2, .SeqCst, .SeqCst);
\\}
, &[_][]const u8{
"tmp.zig:3:22: error: expected integer, enum or pointer type, found 'f32'",
});
cases.add("atomicrmw with float op not .Xchg, .Add or .Sub",
\\export fn entry() void {
\\ var x: f32 = 0;
\\ _ = @atomicRmw(f32, &x, .And, 2, .SeqCst);
\\}
, &[_][]const u8{
"tmp.zig:3:29: error: @atomicRmw with float only allowed with .Xchg, .Add and .Sub",
});
cases.add("intToPtr with misaligned address",
\\pub fn main() void {
\\ var y = @intToPtr([*]align(4) u8, 5);
\\}
, &[_][]const u8{
"tmp.zig:2:13: error: pointer type '[*]align(4) u8' requires aligned address",
});
cases.add("invalid float literal",
\\const std = @import("std");
\\
\\pub fn main() void {
\\ var bad_float :f32 = 0.0;
\\ bad_float = bad_float + .20;
\\ std.debug.assert(bad_float < 1.0);
\\}
, &[_][]const u8{
"tmp.zig:5:29: error: invalid token: '.'",
});
cases.add("invalid exponent in float literal - 1",
\\fn main() void {
\\ var bad: f128 = 0x1.0p1ab1;
\\}
, &[_][]const u8{
"tmp.zig:2:28: error: invalid character: 'a'",
});
cases.add("invalid exponent in float literal - 2",
\\fn main() void {
\\ var bad: f128 = 0x1.0p50F;
\\}
, &[_][]const u8{
"tmp.zig:2:29: error: invalid character: 'F'",
});
cases.add("invalid underscore placement in float literal - 1",
\\fn main() void {
\\ var bad: f128 = 0._0;
\\}
, &[_][]const u8{
"tmp.zig:2:23: error: invalid character: '_'",
});
cases.add("invalid underscore placement in float literal - 2",
\\fn main() void {
\\ var bad: f128 = 0_.0;
\\}
, &[_][]const u8{
"tmp.zig:2:23: error: invalid character: '.'",
});
cases.add("invalid underscore placement in float literal - 3",
\\fn main() void {
\\ var bad: f128 = 0.0_;
\\}
, &[_][]const u8{
"tmp.zig:2:25: error: invalid character: ';'",
});
cases.add("invalid underscore placement in float literal - 4",
\\fn main() void {
\\ var bad: f128 = 1.0e_1;
\\}
, &[_][]const u8{
"tmp.zig:2:25: error: invalid character: '_'",
});
cases.add("invalid underscore placement in float literal - 5",
\\fn main() void {
\\ var bad: f128 = 1.0e+_1;
\\}
, &[_][]const u8{
"tmp.zig:2:26: error: invalid character: '_'",
});
cases.add("invalid underscore placement in float literal - 6",
\\fn main() void {
\\ var bad: f128 = 1.0e-_1;
\\}
, &[_][]const u8{
"tmp.zig:2:26: error: invalid character: '_'",
});
cases.add("invalid underscore placement in float literal - 7",
\\fn main() void {
\\ var bad: f128 = 1.0e-1_;
\\}
, &[_][]const u8{
"tmp.zig:2:28: error: invalid character: ';'",
});
cases.add("invalid underscore placement in float literal - 9",
\\fn main() void {
\\ var bad: f128 = 1__0.0e-1;
\\}
, &[_][]const u8{
"tmp.zig:2:23: error: invalid character: '_'",
});
cases.add("invalid underscore placement in float literal - 10",
\\fn main() void {
\\ var bad: f128 = 1.0__0e-1;
\\}
, &[_][]const u8{
"tmp.zig:2:25: error: invalid character: '_'",
});
cases.add("invalid underscore placement in float literal - 11",
\\fn main() void {
\\ var bad: f128 = 1.0e-1__0;
\\}
, &[_][]const u8{
"tmp.zig:2:28: error: invalid character: '_'",
});
cases.add("invalid underscore placement in float literal - 12",
\\fn main() void {
\\ var bad: f128 = 0_x0.0;
\\}
, &[_][]const u8{
"tmp.zig:2:23: error: invalid character: 'x'",
});
cases.add("invalid underscore placement in float literal - 13",
\\fn main() void {
\\ var bad: f128 = 0x_0.0;
\\}
, &[_][]const u8{
"tmp.zig:2:23: error: invalid character: '_'",
});
cases.add("invalid underscore placement in float literal - 14",
\\fn main() void {
\\ var bad: f128 = 0x0.0_p1;
\\}
, &[_][]const u8{
"tmp.zig:2:27: error: invalid character: 'p'",
});
cases.add("invalid underscore placement in int literal - 1",
\\fn main() void {
\\ var bad: u128 = 0010_;
\\}
, &[_][]const u8{
"tmp.zig:2:26: error: invalid character: ';'",
});
cases.add("invalid underscore placement in int literal - 2",
\\fn main() void {
\\ var bad: u128 = 0b0010_;
\\}
, &[_][]const u8{
"tmp.zig:2:28: error: invalid character: ';'",
});
cases.add("invalid underscore placement in int literal - 3",
\\fn main() void {
\\ var bad: u128 = 0o0010_;
\\}
, &[_][]const u8{
"tmp.zig:2:28: error: invalid character: ';'",
});
cases.add("invalid underscore placement in int literal - 4",
\\fn main() void {
\\ var bad: u128 = 0x0010_;
\\}
, &[_][]const u8{
"tmp.zig:2:28: error: invalid character: ';'",
});
cases.add("comptime struct field, no init value",
\\const Foo = struct {
\\ comptime b: i32,
\\};
\\export fn entry() void {
\\ var f: Foo = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: comptime struct field missing initialization value",
});
cases.add("bad usage of @call",
\\export fn entry1() void {
\\ @call(.{}, foo, {});
\\}
\\export fn entry2() void {
\\ comptime @call(.{ .modifier = .never_inline }, foo, .{});
\\}
\\export fn entry3() void {
\\ comptime @call(.{ .modifier = .never_tail }, foo, .{});
\\}
\\export fn entry4() void {
\\ @call(.{ .modifier = .never_inline }, bar, .{});
\\}
\\export fn entry5(c: bool) void {
\\ var baz = if (c) baz1 else baz2;
\\ @call(.{ .modifier = .compile_time }, baz, .{});
\\}
\\fn foo() void {}
\\inline fn bar() void {}
\\fn baz1() void {}
\\fn baz2() void {}
, &[_][]const u8{
"tmp.zig:2:21: error: expected tuple or struct, found 'void'",
"tmp.zig:5:14: error: unable to perform 'never_inline' call at compile-time",
"tmp.zig:8:14: error: unable to perform 'never_tail' call at compile-time",
"tmp.zig:11:5: error: no-inline call of inline function",
"tmp.zig:15:5: error: the specified modifier requires a comptime-known function",
});
cases.add("exported async function",
\\export fn foo() callconv(.Async) void {}
, &[_][]const u8{
"tmp.zig:1:1: error: exported function cannot be async",
});
cases.addExe("main missing name",
\\pub fn (main) void {}
, &[_][]const u8{
"tmp.zig:1:5: error: missing function name",
});
cases.addCase(x: {
var tc = cases.create("call with new stack on unsupported target",
\\var buf: [10]u8 align(16) = undefined;
\\export fn entry() void {
\\ @call(.{.stack = &buf}, foo, .{});
\\}
\\fn foo() void {}
, &[_][]const u8{
"tmp.zig:3:5: error: target arch 'wasm32' does not support calling with a new stack",
});
tc.target = std.zig.CrossTarget{
.cpu_arch = .wasm32,
.os_tag = .wasi,
.abi = .none,
};
break :x tc;
});
// Note: One of the error messages here is backwards. It would be nice to fix, but that's not
// going to stop me from merging this branch which fixes a bunch of other stuff.
cases.add("incompatible sentinels",
\\export fn entry1(ptr: [*:255]u8) [*:0]u8 {
\\ return ptr;
\\}
\\export fn entry2(ptr: [*]u8) [*:0]u8 {
\\ return ptr;
\\}
\\export fn entry3() void {
\\ var array: [2:0]u8 = [_:255]u8{1, 2};
\\}
\\export fn entry4() void {
\\ var array: [2:0]u8 = [_]u8{1, 2};
\\}
, &[_][]const u8{
"tmp.zig:2:12: error: expected type '[*:0]u8', found '[*:255]u8'",
"tmp.zig:2:12: note: destination pointer requires a terminating '0' sentinel, but source pointer has a terminating '255' sentinel",
"tmp.zig:5:12: error: expected type '[*:0]u8', found '[*]u8'",
"tmp.zig:5:12: note: destination pointer requires a terminating '0' sentinel",
"tmp.zig:8:35: error: expected type '[2:255]u8', found '[2:0]u8'",
"tmp.zig:8:35: note: destination array requires a terminating '255' sentinel, but source array has a terminating '0' sentinel",
"tmp.zig:11:31: error: expected type '[2:0]u8', found '[2]u8'",
"tmp.zig:11:31: note: destination array requires a terminating '0' sentinel",
});
cases.add("empty switch on an integer",
\\export fn entry() void {
\\ var x: u32 = 0;
\\ switch(x) {}
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: switch must handle all possibilities",
});
cases.add("incorrect return type",
\\ pub export fn entry() void{
\\ _ = foo();
\\ }
\\ const A = struct {
\\ a: u32,
\\ };
\\ fn foo() A {
\\ return bar();
\\ }
\\ const B = struct {
\\ a: u32,
\\ };
\\ fn bar() B {
\\ unreachable;
\\ }
, &[_][]const u8{
"tmp.zig:8:16: error: expected type 'A', found 'B'",
});
cases.add("regression test #2980: base type u32 is not type checked properly when assigning a value within a struct",
\\const Foo = struct {
\\ ptr: ?*usize,
\\ uval: u32,
\\};
\\fn get_uval(x: u32) !u32 {
\\ return error.NotFound;
\\}
\\export fn entry() void {
\\ const afoo = Foo{
\\ .ptr = null,
\\ .uval = get_uval(42),
\\ };
\\}
, &[_][]const u8{
"tmp.zig:11:25: error: expected type 'u32', found '@TypeOf(get_uval).ReturnType.ErrorSet!u32'",
});
cases.add("assigning to struct or union fields that are not optionals with a function that returns an optional",
\\fn maybe(is: bool) ?u8 {
\\ if (is) return @as(u8, 10) else return null;
\\}
\\const U = union {
\\ Ye: u8,
\\};
\\const S = struct {
\\ num: u8,
\\};
\\export fn entry() void {
\\ var u = U{ .Ye = maybe(false) };
\\ var s = S{ .num = maybe(false) };
\\}
, &[_][]const u8{
"tmp.zig:11:27: error: expected type 'u8', found '?u8'",
});
cases.add("missing result type for phi node",
\\fn foo() !void {
\\ return anyerror.Foo;
\\}
\\export fn entry() void {
\\ foo() catch 0;
\\}
, &[_][]const u8{
"tmp.zig:5:17: error: integer value 0 cannot be coerced to type 'void'",
});
cases.add("atomicrmw with enum op not .Xchg",
\\export fn entry() void {
\\ const E = enum(u8) {
\\ a,
\\ b,
\\ c,
\\ d,
\\ };
\\ var x: E = .a;
\\ _ = @atomicRmw(E, &x, .Add, .b, .SeqCst);
\\}
, &[_][]const u8{
"tmp.zig:9:27: error: @atomicRmw with enum only allowed with .Xchg",
});
cases.add("disallow coercion from non-null-terminated pointer to null-terminated pointer",
\\extern fn puts(s: [*:0]const u8) c_int;
\\pub fn main() void {
\\ const no_zero_array = [_]u8{'h', 'e', 'l', 'l', 'o'};
\\ const no_zero_ptr: [*]const u8 = &no_zero_array;
\\ _ = puts(no_zero_ptr);
\\}
, &[_][]const u8{
"tmp.zig:5:14: error: expected type '[*:0]const u8', found '[*]const u8'",
});
cases.add("atomic orderings of atomicStore Acquire or AcqRel",
\\export fn entry() void {
\\ var x: u32 = 0;
\\ @atomicStore(u32, &x, 1, .Acquire);
\\}
, &[_][]const u8{
"tmp.zig:3:30: error: @atomicStore atomic ordering must not be Acquire or AcqRel",
});
cases.add("missing const in slice with nested array type",
\\const Geo3DTex2D = struct { vertices: [][2]f32 };
\\pub fn getGeo3DTex2D() Geo3DTex2D {
\\ return Geo3DTex2D{
\\ .vertices = [_][2]f32{
\\ [_]f32{ -0.5, -0.5},
\\ },
\\ };
\\}
\\export fn entry() void {
\\ var geo_data = getGeo3DTex2D();
\\}
, &[_][]const u8{
"tmp.zig:4:30: error: array literal requires address-of operator to coerce to slice type '[][2]f32'",
});
cases.add("slicing of global undefined pointer",
\\var buf: *[1]u8 = undefined;
\\export fn entry() void {
\\ _ = buf[0..1];
\\}
, &[_][]const u8{
"tmp.zig:3:12: error: non-zero length slice of undefined pointer",
});
cases.add("using invalid types in function call raises an error",
\\const MenuEffect = enum {};
\\fn func(effect: MenuEffect) void {}
\\export fn entry() void {
\\ func(MenuEffect.ThisDoesNotExist);
\\}
, &[_][]const u8{
"tmp.zig:1:20: error: enums must have 1 or more fields",
"tmp.zig:4:20: note: referenced here",
});
cases.add("store vector pointer with unknown runtime index",
\\export fn entry() void {
\\ var v: @import("std").meta.Vector(4, i32) = [_]i32{ 1, 5, 3, undefined };
\\
\\ var i: u32 = 0;
\\ storev(&v[i], 42);
\\}
\\
\\fn storev(ptr: anytype, val: i32) void {
\\ ptr.* = val;
\\}
, &[_][]const u8{
"tmp.zig:9:8: error: unable to determine vector element index of type '*align(16:0:4:?) i32",
});
cases.add("load vector pointer with unknown runtime index",
\\export fn entry() void {
\\ var v: @import("std").meta.Vector(4, i32) = [_]i32{ 1, 5, 3, undefined };
\\
\\ var i: u32 = 0;
\\ var x = loadv(&v[i]);
\\}
\\
\\fn loadv(ptr: anytype) i32 {
\\ return ptr.*;
\\}
, &[_][]const u8{
"tmp.zig:9:12: error: unable to determine vector element index of type '*align(16:0:4:?) i32",
});
cases.add("using an unknown len ptr type instead of array",
\\const resolutions = [*][*]const u8{
\\ "[320 240 ]",
\\ null,
\\};
\\comptime {
\\ _ = resolutions;
\\}
, &[_][]const u8{
"tmp.zig:1:21: error: expected array type or [_], found '[*][*]const u8'",
});
cases.add("comparison with error union and error value",
\\export fn entry() void {
\\ var number_or_error: anyerror!i32 = error.SomethingAwful;
\\ _ = number_or_error == error.SomethingAwful;
\\}
, &[_][]const u8{
"tmp.zig:3:25: error: operator not allowed for type 'anyerror!i32'",
});
cases.add("switch with overlapping case ranges",
\\export fn entry() void {
\\ var q: u8 = 0;
\\ switch (q) {
\\ 1...2 => {},
\\ 0...255 => {},
\\ }
\\}
, &[_][]const u8{
"tmp.zig:5:9: error: duplicate switch value",
});
cases.add("invalid optional type in extern struct",
\\const stroo = extern struct {
\\ moo: ?[*c]u8,
\\};
\\export fn testf(fluff: *stroo) void {}
, &[_][]const u8{
"tmp.zig:2:5: error: extern structs cannot contain fields of type '?[*c]u8'",
});
cases.add("attempt to negate a non-integer, non-float or non-vector type",
\\fn foo() anyerror!u32 {
\\ return 1;
\\}
\\
\\export fn entry() void {
\\ const x = -foo();
\\}
, &[_][]const u8{
"tmp.zig:6:15: error: negation of type 'anyerror!u32'",
});
cases.add("attempt to create 17 bit float type",
\\const builtin = @import("builtin");
\\comptime {
\\ _ = @Type(builtin.TypeInfo { .Float = builtin.TypeInfo.Float { .bits = 17 } });
\\}
, &[_][]const u8{
"tmp.zig:3:32: error: 17-bit float unsupported",
});
cases.add("wrong type for @Type",
\\export fn entry() void {
\\ _ = @Type(0);
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: expected type 'std.builtin.TypeInfo', found 'comptime_int'",
});
cases.add("@Type with non-constant expression",
\\const builtin = @import("builtin");
\\var globalTypeInfo : builtin.TypeInfo = undefined;
\\export fn entry() void {
\\ _ = @Type(globalTypeInfo);
\\}
, &[_][]const u8{
"tmp.zig:4:15: error: unable to evaluate constant expression",
});
cases.add("@Type with TypeInfo.Int",
\\const builtin = @import("builtin");
\\export fn entry() void {
\\ _ = @Type(builtin.TypeInfo.Int {
\\ .is_signed = true,
\\ .bits = 8,
\\ });
\\}
, &[_][]const u8{
"tmp.zig:3:36: error: expected type 'std.builtin.TypeInfo', found 'std.builtin.Int'",
});
cases.add("Struct unavailable for @Type",
\\export fn entry() void {
\\ _ = @Type(@typeInfo(struct { }));
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: @Type not available for 'TypeInfo.Struct'",
});
cases.add("wrong type for argument tuple to @asyncCall",
\\export fn entry1() void {
\\ var frame: @Frame(foo) = undefined;
\\ @asyncCall(&frame, {}, foo, {});
\\}
\\
\\fn foo() i32 {
\\ return 0;
\\}
, &[_][]const u8{
"tmp.zig:3:33: error: expected tuple or struct, found 'void'",
});
cases.add("wrong type for result ptr to @asyncCall",
\\export fn entry() void {
\\ _ = async amain();
\\}
\\fn amain() i32 {
\\ var frame: @Frame(foo) = undefined;
\\ return await @asyncCall(&frame, false, foo, .{});
\\}
\\fn foo() i32 {
\\ return 1234;
\\}
, &[_][]const u8{
"tmp.zig:6:37: error: expected type '*i32', found 'bool'",
});
cases.add("shift amount has to be an integer type",
\\export fn entry() void {
\\ const x = 1 << &@as(u8, 10);
\\}
, &[_][]const u8{
"tmp.zig:2:21: error: shift amount has to be an integer type, but found '*const u8'",
"tmp.zig:2:17: note: referenced here",
});
cases.add("bit shifting only works on integer types",
\\export fn entry() void {
\\ const x = &@as(u8, 1) << 10;
\\}
, &[_][]const u8{
"tmp.zig:2:16: error: bit shifting operation expected integer type, found '*const u8'",
"tmp.zig:2:27: note: referenced here",
});
cases.add("struct depends on itself via optional field",
\\const LhsExpr = struct {
\\ rhsExpr: ?AstObject,
\\};
\\const AstObject = union {
\\ lhsExpr: LhsExpr,
\\};
\\export fn entry() void {
\\ const lhsExpr = LhsExpr{ .rhsExpr = null };
\\ const obj = AstObject{ .lhsExpr = lhsExpr };
\\}
, &[_][]const u8{
"tmp.zig:1:17: error: struct 'LhsExpr' depends on itself",
"tmp.zig:5:5: note: while checking this field",
"tmp.zig:2:5: note: while checking this field",
});
cases.add("alignment of enum field specified",
\\const Number = enum {
\\ a,
\\ b align(i32),
\\};
\\export fn entry1() void {
\\ var x: Number = undefined;
\\}
, &[_][]const u8{
"tmp.zig:3:13: error: structs and unions, not enums, support field alignment",
"tmp.zig:1:16: note: consider 'union(enum)' here",
});
cases.add("bad alignment type",
\\export fn entry1() void {
\\ var x: []align(true) i32 = undefined;
\\}
\\export fn entry2() void {
\\ var x: *align(@as(f64, 12.34)) i32 = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:20: error: expected type 'u29', found 'bool'",
"tmp.zig:5:19: error: fractional component prevents float value 12.340000 from being casted to type 'u29'",
});
cases.addCase(x: {
var tc = cases.create("variable in inline assembly template cannot be found",
\\export fn entry() void {
\\ var sp = asm volatile (
\\ "mov %[foo], sp"
\\ : [bar] "=r" (-> usize)
\\ );
\\}
, &[_][]const u8{
"tmp.zig:2:14: error: could not find 'foo' in the inputs or outputs",
});
tc.target = std.zig.CrossTarget{
.cpu_arch = .x86_64,
.os_tag = .linux,
.abi = .gnu,
};
break :x tc;
});
cases.add("indirect recursion of async functions detected",
\\var frame: ?anyframe = null;
\\
\\export fn a() void {
\\ _ = async rangeSum(10);
\\ while (frame) |f| resume f;
\\}
\\
\\fn rangeSum(x: i32) i32 {
\\ suspend {
\\ frame = @frame();
\\ }
\\ frame = null;
\\
\\ if (x == 0) return 0;
\\ var child = rangeSumIndirect(x - 1);
\\ return child + 1;
\\}
\\
\\fn rangeSumIndirect(x: i32) i32 {
\\ suspend {
\\ frame = @frame();
\\ }
\\ frame = null;
\\
\\ if (x == 0) return 0;
\\ var child = rangeSum(x - 1);
\\ return child + 1;
\\}
, &[_][]const u8{
"tmp.zig:8:1: error: '@Frame(rangeSum)' depends on itself",
"tmp.zig:15:33: note: when analyzing type '@Frame(rangeSum)' here",
"tmp.zig:26:25: note: when analyzing type '@Frame(rangeSumIndirect)' here",
});
cases.add("non-async function pointer eventually is inferred to become async",
\\export fn a() void {
\\ var non_async_fn: fn () void = undefined;
\\ non_async_fn = func;
\\}
\\fn func() void {
\\ suspend;
\\}
, &[_][]const u8{
"tmp.zig:5:1: error: 'func' cannot be async",
"tmp.zig:3:20: note: required to be non-async here",
"tmp.zig:6:5: note: suspends here",
});
cases.add("bad alignment in @asyncCall",
\\export fn entry() void {
\\ var ptr: fn () callconv(.Async) void = func;
\\ var bytes: [64]u8 = undefined;
\\ _ = @asyncCall(&bytes, {}, ptr, .{});
\\}
\\fn func() callconv(.Async) void {}
, &[_][]const u8{
"tmp.zig:4:21: error: expected type '[]align(16) u8', found '*[64]u8'",
});
cases.add("atomic orderings of fence Acquire or stricter",
\\export fn entry() void {
\\ @fence(.Monotonic);
\\}
, &[_][]const u8{
"tmp.zig:2:12: error: atomic ordering must be Acquire or stricter",
});
cases.add("bad alignment in implicit cast from array pointer to slice",
\\export fn a() void {
\\ var x: [10]u8 = undefined;
\\ var y: []align(16) u8 = &x;
\\}
, &[_][]const u8{
"tmp.zig:3:30: error: expected type '[]align(16) u8', found '*[10]u8'",
});
cases.add("result location incompatibility mismatching handle_is_ptr (generic call)",
\\export fn entry() void {
\\ var damn = Container{
\\ .not_optional = getOptional(i32),
\\ };
\\}
\\pub fn getOptional(comptime T: type) ?T {
\\ return 0;
\\}
\\pub const Container = struct {
\\ not_optional: i32,
\\};
, &[_][]const u8{
"tmp.zig:3:36: error: expected type 'i32', found '?i32'",
});
cases.add("result location incompatibility mismatching handle_is_ptr",
\\export fn entry() void {
\\ var damn = Container{
\\ .not_optional = getOptional(),
\\ };
\\}
\\pub fn getOptional() ?i32 {
\\ return 0;
\\}
\\pub const Container = struct {
\\ not_optional: i32,
\\};
, &[_][]const u8{
"tmp.zig:3:36: error: expected type 'i32', found '?i32'",
});
cases.add("const frame cast to anyframe",
\\export fn a() void {
\\ const f = async func();
\\ resume f;
\\}
\\export fn b() void {
\\ const f = async func();
\\ var x: anyframe = &f;
\\}
\\fn func() void {
\\ suspend;
\\}
, &[_][]const u8{
"tmp.zig:3:12: error: expected type 'anyframe', found '*const @Frame(func)'",
"tmp.zig:7:24: error: expected type 'anyframe', found '*const @Frame(func)'",
});
cases.add("prevent bad implicit casting of anyframe types",
\\export fn a() void {
\\ var x: anyframe = undefined;
\\ var y: anyframe->i32 = x;
\\}
\\export fn b() void {
\\ var x: i32 = undefined;
\\ var y: anyframe->i32 = x;
\\}
\\export fn c() void {
\\ var x: @Frame(func) = undefined;
\\ var y: anyframe->i32 = &x;
\\}
\\fn func() void {}
, &[_][]const u8{
"tmp.zig:3:28: error: expected type 'anyframe->i32', found 'anyframe'",
"tmp.zig:7:28: error: expected type 'anyframe->i32', found 'i32'",
"tmp.zig:11:29: error: expected type 'anyframe->i32', found '*@Frame(func)'",
});
cases.add("wrong frame type used for async call",
\\export fn entry() void {
\\ var frame: @Frame(foo) = undefined;
\\ frame = async bar();
\\}
\\fn foo() void {
\\ suspend;
\\}
\\fn bar() void {
\\ suspend;
\\}
, &[_][]const u8{
"tmp.zig:3:13: error: expected type '*@Frame(bar)', found '*@Frame(foo)'",
});
cases.add("@Frame() of generic function",
\\export fn entry() void {
\\ var frame: @Frame(func) = undefined;
\\}
\\fn func(comptime T: type) void {
\\ var x: T = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:16: error: @Frame() of generic function",
});
cases.add("@frame() causes function to be async",
\\export fn entry() void {
\\ func();
\\}
\\fn func() void {
\\ _ = @frame();
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: function with calling convention 'C' cannot be async",
"tmp.zig:5:9: note: @frame() causes function to be async",
});
cases.add("invalid suspend in exported function",
\\export fn entry() void {
\\ var frame = async func();
\\ var result = await frame;
\\}
\\fn func() void {
\\ suspend;
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: function with calling convention 'C' cannot be async",
"tmp.zig:3:18: note: await here is a suspend point",
});
cases.add("async function indirectly depends on its own frame",
\\export fn entry() void {
\\ _ = async amain();
\\}
\\fn amain() callconv(.Async) void {
\\ other();
\\}
\\fn other() void {
\\ var x: [@sizeOf(@Frame(amain))]u8 = undefined;
\\}
, &[_][]const u8{
"tmp.zig:4:1: error: unable to determine async function frame of 'amain'",
"tmp.zig:5:10: note: analysis of function 'other' depends on the frame",
"tmp.zig:8:13: note: referenced here",
});
cases.add("async function depends on its own frame",
\\export fn entry() void {
\\ _ = async amain();
\\}
\\fn amain() callconv(.Async) void {
\\ var x: [@sizeOf(@Frame(amain))]u8 = undefined;
\\}
, &[_][]const u8{
"tmp.zig:4:1: error: cannot resolve '@Frame(amain)': function not fully analyzed yet",
"tmp.zig:5:13: note: referenced here",
});
cases.add("non async function pointer passed to @asyncCall",
\\export fn entry() void {
\\ var ptr = afunc;
\\ var bytes: [100]u8 align(16) = undefined;
\\ _ = @asyncCall(&bytes, {}, ptr, .{});
\\}
\\fn afunc() void { }
, &[_][]const u8{
"tmp.zig:4:32: error: expected async function, found 'fn() void'",
});
cases.add("runtime-known async function called",
\\export fn entry() void {
\\ _ = async amain();
\\}
\\fn amain() void {
\\ var ptr = afunc;
\\ _ = ptr();
\\}
\\fn afunc() callconv(.Async) void {}
, &[_][]const u8{
"tmp.zig:6:12: error: function is not comptime-known; @asyncCall required",
});
cases.add("runtime-known function called with async keyword",
\\export fn entry() void {
\\ var ptr = afunc;
\\ _ = async ptr();
\\}
\\
\\fn afunc() callconv(.Async) void { }
, &[_][]const u8{
"tmp.zig:3:15: error: function is not comptime-known; @asyncCall required",
});
cases.add("function with ccc indirectly calling async function",
\\export fn entry() void {
\\ foo();
\\}
\\fn foo() void {
\\ bar();
\\}
\\fn bar() void {
\\ suspend;
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: function with calling convention 'C' cannot be async",
"tmp.zig:2:8: note: async function call here",
"tmp.zig:5:8: note: async function call here",
"tmp.zig:8:5: note: suspends here",
});
cases.add("capture group on switch prong with incompatible payload types",
\\const Union = union(enum) {
\\ A: usize,
\\ B: isize,
\\};
\\comptime {
\\ var u = Union{ .A = 8 };
\\ switch (u) {
\\ .A, .B => |e| unreachable,
\\ }
\\}
, &[_][]const u8{
"tmp.zig:8:20: error: capture group with incompatible types",
"tmp.zig:8:9: note: type 'usize' here",
"tmp.zig:8:13: note: type 'isize' here",
});
cases.add("wrong type to @hasField",
\\export fn entry() bool {
\\ return @hasField(i32, "hi");
\\}
, &[_][]const u8{
"tmp.zig:2:22: error: type 'i32' does not support @hasField",
});
cases.add("slice passed as array init type with elems",
\\export fn entry() void {
\\ const x = []u8{1, 2};
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: array literal requires address-of operator to coerce to slice type '[]u8'",
});
cases.add("slice passed as array init type",
\\export fn entry() void {
\\ const x = []u8{};
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: array literal requires address-of operator to coerce to slice type '[]u8'",
});
cases.add("inferred array size invalid here",
\\export fn entry() void {
\\ const x = [_]u8;
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: inferred array size invalid here",
});
cases.add("initializing array with struct syntax",
\\export fn entry() void {
\\ const x = [_]u8{ .y = 2 };
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: initializing array with struct syntax",
});
cases.add("compile error in struct init expression",
\\const Foo = struct {
\\ a: i32 = crap,
\\ b: i32,
\\};
\\export fn entry() void {
\\ var x = Foo{
\\ .b = 5,
\\ };
\\}
, &[_][]const u8{
"tmp.zig:2:14: error: use of undeclared identifier 'crap'",
});
cases.add("undefined as field type is rejected",
\\const Foo = struct {
\\ a: undefined,
\\};
\\export fn entry1() void {
\\ const foo: Foo = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:8: error: use of undefined value here causes undefined behavior",
});
cases.add("@hasDecl with non-container",
\\export fn entry() void {
\\ _ = @hasDecl(i32, "hi");
\\}
, &[_][]const u8{
"tmp.zig:2:18: error: expected struct, enum, or union; found 'i32'",
});
cases.add("field access of slices",
\\export fn entry() void {
\\ var slice: []i32 = undefined;
\\ const info = @TypeOf(slice).unknown;
\\}
, &[_][]const u8{
"tmp.zig:3:32: error: type '[]i32' does not support field access",
});
cases.add("peer cast then implicit cast const pointer to mutable C pointer",
\\export fn func() void {
\\ var strValue: [*c]u8 = undefined;
\\ strValue = strValue orelse "";
\\}
, &[_][]const u8{
"tmp.zig:3:32: error: expected type '[*c]u8', found '*const [0:0]u8'",
"tmp.zig:3:32: note: cast discards const qualifier",
});
cases.add("overflow in enum value allocation",
\\const Moo = enum(u8) {
\\ Last = 255,
\\ Over,
\\};
\\pub fn main() void {
\\ var y = Moo.Last;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: enumeration value 256 too large for type 'u8'",
});
cases.add("attempt to cast enum literal to error",
\\export fn entry() void {
\\ switch (error.Hi) {
\\ .Hi => {},
\\ }
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: expected type 'error{Hi}', found '(enum literal)'",
});
cases.add("@sizeOf bad type",
\\export fn entry() usize {
\\ return @sizeOf(@TypeOf(null));
\\}
, &[_][]const u8{
"tmp.zig:2:20: error: no size available for type '(null)'",
});
cases.add("generic function where return type is self-referenced",
\\fn Foo(comptime T: type) Foo(T) {
\\ return struct{ x: T };
\\}
\\export fn entry() void {
\\ const t = Foo(u32) {
\\ .x = 1
\\ };
\\}
, &[_][]const u8{
"tmp.zig:1:29: error: evaluation exceeded 1000 backwards branches",
"tmp.zig:5:18: note: referenced here",
});
cases.add("@ptrToInt 0 to non optional pointer",
\\export fn entry() void {
\\ var b = @intToPtr(*i32, 0);
\\}
, &[_][]const u8{
"tmp.zig:2:13: error: pointer type '*i32' does not allow address zero",
});
cases.add("cast enum literal to enum but it doesn't match",
\\const Foo = enum {
\\ a,
\\ b,
\\};
\\export fn entry() void {
\\ const x: Foo = .c;
\\}
, &[_][]const u8{
"tmp.zig:6:20: error: enum 'Foo' has no field named 'c'",
"tmp.zig:1:13: note: 'Foo' declared here",
});
cases.add("discarding error value",
\\export fn entry() void {
\\ _ = foo();
\\}
\\fn foo() !void {
\\ return error.OutOfMemory;
\\}
, &[_][]const u8{
"tmp.zig:2:12: error: error is discarded",
});
cases.add("volatile on global assembly",
\\comptime {
\\ asm volatile ("");
\\}
, &[_][]const u8{
"tmp.zig:2:9: error: volatile is meaningless on global assembly",
});
cases.add("invalid multiple dereferences",
\\export fn a() void {
\\ var box = Box{ .field = 0 };
\\ box.*.field = 1;
\\}
\\export fn b() void {
\\ var box = Box{ .field = 0 };
\\ var boxPtr = &box;
\\ boxPtr.*.*.field = 1;
\\}
\\pub const Box = struct {
\\ field: i32,
\\};
, &[_][]const u8{
"tmp.zig:3:8: error: attempt to dereference non-pointer type 'Box'",
"tmp.zig:8:13: error: attempt to dereference non-pointer type 'Box'",
});
cases.add("usingnamespace with wrong type",
\\usingnamespace void;
, &[_][]const u8{
"tmp.zig:1:1: error: expected struct, enum, or union; found 'void'",
});
cases.add("ignored expression in while continuation",
\\export fn a() void {
\\ while (true) : (bad()) {}
\\}
\\export fn b() void {
\\ var x: anyerror!i32 = 1234;
\\ while (x) |_| : (bad()) {} else |_| {}
\\}
\\export fn c() void {
\\ var x: ?i32 = 1234;
\\ while (x) |_| : (bad()) {}
\\}
\\fn bad() anyerror!void {
\\ return error.Bad;
\\}
, &[_][]const u8{
"tmp.zig:2:24: error: expression value is ignored",
"tmp.zig:6:25: error: expression value is ignored",
"tmp.zig:10:25: error: expression value is ignored",
});
cases.add("empty while loop body",
\\export fn a() void {
\\ while(true);
\\}
, &[_][]const u8{
"tmp.zig:2:16: error: expected loop body, found ';'",
});
cases.add("empty for loop body",
\\export fn a() void {
\\ for(undefined) |x|;
\\}
, &[_][]const u8{
"tmp.zig:2:23: error: expected loop body, found ';'",
});
cases.add("empty if body",
\\export fn a() void {
\\ if(true);
\\}
, &[_][]const u8{
"tmp.zig:2:13: error: expected if body, found ';'",
});
cases.add("import outside package path",
\\comptime{
\\ _ = @import("../a.zig");
\\}
, &[_][]const u8{
"tmp.zig:2:9: error: import of file outside package path: '../a.zig'",
});
cases.add("bogus compile var",
\\const x = @import("builtin").bogus;
\\export fn entry() usize { return @sizeOf(@TypeOf(x)); }
, &[_][]const u8{
"tmp.zig:1:29: error: container 'builtin' has no member called 'bogus'",
});
cases.add("wrong panic signature, runtime function",
\\test "" {}
\\
\\pub fn panic() void {}
\\
, &[_][]const u8{
"error: expected type 'fn([]const u8, ?*std.builtin.StackTrace) noreturn', found 'fn() void'",
});
cases.add("wrong panic signature, generic function",
\\pub fn panic(comptime msg: []const u8, error_return_trace: ?*builtin.StackTrace) noreturn {
\\ while (true) {}
\\}
, &[_][]const u8{
"error: expected type 'fn([]const u8, ?*std.builtin.StackTrace) noreturn', found 'fn([]const u8,anytype) anytype'",
"note: only one of the functions is generic",
});
cases.add("direct struct loop",
\\const A = struct { a : A, };
\\export fn entry() usize { return @sizeOf(A); }
, &[_][]const u8{
"tmp.zig:1:11: error: struct 'A' depends on itself",
});
cases.add("indirect struct loop",
\\const A = struct { b : B, };
\\const B = struct { c : C, };
\\const C = struct { a : A, };
\\export fn entry() usize { return @sizeOf(A); }
, &[_][]const u8{
"tmp.zig:1:11: error: struct 'A' depends on itself",
});
cases.add("instantiating an undefined value for an invalid struct that contains itself",
\\const Foo = struct {
\\ x: Foo,
\\};
\\
\\var foo: Foo = undefined;
\\
\\export fn entry() usize {
\\ return @sizeOf(@TypeOf(foo.x));
\\}
, &[_][]const u8{
"tmp.zig:1:13: error: struct 'Foo' depends on itself",
"tmp.zig:8:28: note: referenced here",
});
cases.add("enum field value references enum",
\\pub const Foo = extern enum {
\\ A = Foo.B,
\\ C = D,
\\};
\\export fn entry() void {
\\ var s: Foo = Foo.E;
\\}
, &[_][]const u8{
"tmp.zig:1:17: error: enum 'Foo' depends on itself",
});
cases.add("top level decl dependency loop",
\\const a : @TypeOf(b) = 0;
\\const b : @TypeOf(a) = 0;
\\export fn entry() void {
\\ const c = a + b;
\\}
, &[_][]const u8{
"tmp.zig:2:19: error: dependency loop detected",
"tmp.zig:1:19: note: referenced here",
"tmp.zig:4:15: note: referenced here",
});
cases.addTest("not an enum type",
\\export fn entry() void {
\\ var self: Error = undefined;
\\ switch (self) {
\\ InvalidToken => |x| return x.token,
\\ ExpectedVarDeclOrFn => |x| return x.token,
\\ }
\\}
\\const Error = union(enum) {
\\ A: InvalidToken,
\\ B: ExpectedVarDeclOrFn,
\\};
\\const InvalidToken = struct {};
\\const ExpectedVarDeclOrFn = struct {};
, &[_][]const u8{
"tmp.zig:4:9: error: expected type '@TagType(Error)', found 'type'",
});
cases.addTest("binary OR operator on error sets",
\\pub const A = error.A;
\\pub const AB = A | error.B;
\\export fn entry() void {
\\ var x: AB = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:18: error: invalid operands to binary expression: 'error{A}' and 'error{B}'",
});
if (std.Target.current.os.tag == .linux) {
cases.addTest("implicit dependency on libc",
\\extern "c" fn exit(u8) void;
\\export fn entry() void {
\\ exit(0);
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: dependency on library c must be explicitly specified in the build command",
});
cases.addTest("libc headers note",
\\const c = @cImport(@cInclude("stdio.h"));
\\export fn entry() void {
\\ _ = c.printf("hello, world!\n");
\\}
, &[_][]const u8{
"tmp.zig:1:11: error: C import failed",
"tmp.zig:1:11: note: libc headers not available; compilation does not link against libc",
});
}
cases.addTest("comptime vector overflow shows the index",
\\comptime {
\\ var a: @import("std").meta.Vector(4, u8) = [_]u8{ 1, 2, 255, 4 };
\\ var b: @import("std").meta.Vector(4, u8) = [_]u8{ 5, 6, 1, 8 };
\\ var x = a + b;
\\}
, &[_][]const u8{
"tmp.zig:4:15: error: operation caused overflow",
"tmp.zig:4:15: note: when computing vector element at index 2",
});
cases.addTest("packed struct with fields of not allowed types",
\\const A = packed struct {
\\ x: anyerror,
\\};
\\const B = packed struct {
\\ x: [2]u24,
\\};
\\const C = packed struct {
\\ x: [1]anyerror,
\\};
\\const D = packed struct {
\\ x: [1]S,
\\};
\\const E = packed struct {
\\ x: [1]U,
\\};
\\const F = packed struct {
\\ x: ?anyerror,
\\};
\\const G = packed struct {
\\ x: Enum,
\\};
\\export fn entry1() void {
\\ var a: A = undefined;
\\}
\\export fn entry2() void {
\\ var b: B = undefined;
\\}
\\export fn entry3() void {
\\ var r: C = undefined;
\\}
\\export fn entry4() void {
\\ var d: D = undefined;
\\}
\\export fn entry5() void {
\\ var e: E = undefined;
\\}
\\export fn entry6() void {
\\ var f: F = undefined;
\\}
\\export fn entry7() void {
\\ var g: G = undefined;
\\}
\\const S = struct {
\\ x: i32,
\\};
\\const U = struct {
\\ A: i32,
\\ B: u32,
\\};
\\const Enum = enum {
\\ A,
\\ B,
\\};
, &[_][]const u8{
"tmp.zig:2:5: error: type 'anyerror' not allowed in packed struct; no guaranteed in-memory representation",
"tmp.zig:5:5: error: array of 'u24' not allowed in packed struct due to padding bits",
"tmp.zig:8:5: error: type 'anyerror' not allowed in packed struct; no guaranteed in-memory representation",
"tmp.zig:11:5: error: non-packed, non-extern struct 'S' not allowed in packed struct; no guaranteed in-memory representation",
"tmp.zig:14:5: error: non-packed, non-extern struct 'U' not allowed in packed struct; no guaranteed in-memory representation",
"tmp.zig:17:5: error: type '?anyerror' not allowed in packed struct; no guaranteed in-memory representation",
"tmp.zig:20:5: error: type 'Enum' not allowed in packed struct; no guaranteed in-memory representation",
"tmp.zig:50:14: note: enum declaration does not specify an integer tag type",
});
cases.addCase(x: {
var tc = cases.create("deduplicate undeclared identifier",
\\export fn a() void {
\\ x += 1;
\\}
\\export fn b() void {
\\ x += 1;
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: use of undeclared identifier 'x'",
});
tc.expect_exact = true;
break :x tc;
});
cases.add("export generic function",
\\export fn foo(num: anytype) i32 {
\\ return 0;
\\}
, &[_][]const u8{
"tmp.zig:1:15: error: parameter of type 'anytype' not allowed in function with calling convention 'C'",
});
cases.add("C pointer to c_void",
\\export fn a() void {
\\ var x: *c_void = undefined;
\\ var y: [*c]c_void = x;
\\}
, &[_][]const u8{
"tmp.zig:3:16: error: C pointers cannot point to opaque types",
});
cases.add("directly embedding opaque type in struct and union",
\\const O = @Type(.Opaque);
\\const Foo = struct {
\\ o: O,
\\};
\\const Bar = union {
\\ One: i32,
\\ Two: O,
\\};
\\export fn a() void {
\\ var foo: Foo = undefined;
\\}
\\export fn b() void {
\\ var bar: Bar = undefined;
\\}
\\export fn c() void {
\\ var baz: *@Type(.Opaque) = undefined;
\\ const qux = .{baz.*};
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: opaque types have unknown size and therefore cannot be directly embedded in structs",
"tmp.zig:7:5: error: opaque types have unknown size and therefore cannot be directly embedded in unions",
"tmp.zig:17:22: error: opaque types have unknown size and therefore cannot be directly embedded in structs",
});
cases.add("implicit cast between C pointer and Zig pointer - bad const/align/child",
\\export fn a() void {
\\ var x: [*c]u8 = undefined;
\\ var y: *align(4) u8 = x;
\\}
\\export fn b() void {
\\ var x: [*c]const u8 = undefined;
\\ var y: *u8 = x;
\\}
\\export fn c() void {
\\ var x: [*c]u8 = undefined;
\\ var y: *u32 = x;
\\}
\\export fn d() void {
\\ var y: *align(1) u32 = undefined;
\\ var x: [*c]u32 = y;
\\}
\\export fn e() void {
\\ var y: *const u8 = undefined;
\\ var x: [*c]u8 = y;
\\}
\\export fn f() void {
\\ var y: *u8 = undefined;
\\ var x: [*c]u32 = y;
\\}
, &[_][]const u8{
"tmp.zig:3:27: error: cast increases pointer alignment",
"tmp.zig:7:18: error: cast discards const qualifier",
"tmp.zig:11:19: error: expected type '*u32', found '[*c]u8'",
"tmp.zig:11:19: note: pointer type child 'u8' cannot cast into pointer type child 'u32'",
"tmp.zig:15:22: error: cast increases pointer alignment",
"tmp.zig:19:21: error: cast discards const qualifier",
"tmp.zig:23:22: error: expected type '[*c]u32', found '*u8'",
});
cases.add("implicit casting null c pointer to zig pointer",
\\comptime {
\\ var c_ptr: [*c]u8 = 0;
\\ var zig_ptr: *u8 = c_ptr;
\\}
, &[_][]const u8{
"tmp.zig:3:24: error: null pointer casted to type '*u8'",
});
cases.add("implicit casting undefined c pointer to zig pointer",
\\comptime {
\\ var c_ptr: [*c]u8 = undefined;
\\ var zig_ptr: *u8 = c_ptr;
\\}
, &[_][]const u8{
"tmp.zig:3:24: error: use of undefined value here causes undefined behavior",
});
cases.add("implicit casting C pointers which would mess up null semantics",
\\export fn entry() void {
\\ var slice: []const u8 = "aoeu";
\\ const opt_many_ptr: [*]const u8 = slice.ptr;
\\ var ptr_opt_many_ptr = &opt_many_ptr;
\\ var c_ptr: [*c]const [*c]const u8 = ptr_opt_many_ptr;
\\ ptr_opt_many_ptr = c_ptr;
\\}
\\export fn entry2() void {
\\ var buf: [4]u8 = "aoeu".*;
\\ var slice: []u8 = &buf;
\\ var opt_many_ptr: [*]u8 = slice.ptr;
\\ var ptr_opt_many_ptr = &opt_many_ptr;
\\ var c_ptr: [*c][*c]const u8 = ptr_opt_many_ptr;
\\}
, &[_][]const u8{
"tmp.zig:6:24: error: expected type '*const [*]const u8', found '[*c]const [*c]const u8'",
"tmp.zig:6:24: note: pointer type child '[*c]const u8' cannot cast into pointer type child '[*]const u8'",
"tmp.zig:6:24: note: '[*c]const u8' could have null values which are illegal in type '[*]const u8'",
"tmp.zig:13:35: error: expected type '[*c][*c]const u8', found '*[*]u8'",
"tmp.zig:13:35: note: pointer type child '[*]u8' cannot cast into pointer type child '[*c]const u8'",
"tmp.zig:13:35: note: mutable '[*c]const u8' allows illegal null values stored to type '[*]u8'",
});
cases.add("implicit casting too big integers to C pointers",
\\export fn a() void {
\\ var ptr: [*c]u8 = (1 << 64) + 1;
\\}
\\export fn b() void {
\\ var x: u65 = 0x1234;
\\ var ptr: [*c]u8 = x;
\\}
, &[_][]const u8{
"tmp.zig:2:33: error: integer value 18446744073709551617 cannot be coerced to type 'usize'",
"tmp.zig:6:23: error: integer type 'u65' too big for implicit @intToPtr to type '[*c]u8'",
});
cases.add("C pointer pointing to non C ABI compatible type or has align attr",
\\const Foo = struct {};
\\export fn a() void {
\\ const T = [*c]Foo;
\\ var t: T = undefined;
\\}
, &[_][]const u8{
"tmp.zig:3:19: error: C pointers cannot point to non-C-ABI-compatible type 'Foo'",
});
cases.addCase(x: {
var tc = cases.create("compile log statement warning deduplication in generic fn",
\\export fn entry() void {
\\ inner(1);
\\ inner(2);
\\}
\\fn inner(comptime n: usize) void {
\\ comptime var i = 0;
\\ inline while (i < n) : (i += 1) { @compileLog("!@#$"); }
\\}
, &[_][]const u8{
"tmp.zig:7:39: error: found compile log statement",
});
tc.expect_exact = true;
break :x tc;
});
cases.add("assign to invalid dereference",
\\export fn entry() void {
\\ 'a'.* = 1;
\\}
, &[_][]const u8{
"tmp.zig:2:8: error: attempt to dereference non-pointer type 'comptime_int'",
});
cases.add("take slice of invalid dereference",
\\export fn entry() void {
\\ const x = 'a'.*[0..];
\\}
, &[_][]const u8{
"tmp.zig:2:18: error: attempt to dereference non-pointer type 'comptime_int'",
});
cases.add("@truncate undefined value",
\\export fn entry() void {
\\ var z = @truncate(u8, @as(u16, undefined));
\\}
, &[_][]const u8{
"tmp.zig:2:27: error: use of undefined value here causes undefined behavior",
});
cases.addTest("return invalid type from test",
\\test "example" { return 1; }
, &[_][]const u8{
"tmp.zig:1:25: error: expected type 'void', found 'comptime_int'",
});
cases.add("threadlocal qualifier on const",
\\threadlocal const x: i32 = 1234;
\\export fn entry() i32 {
\\ return x;
\\}
, &[_][]const u8{
"tmp.zig:1:13: error: threadlocal variable cannot be constant",
});
cases.add("@bitCast same size but bit count mismatch",
\\export fn entry(byte: u8) void {
\\ var oops = @bitCast(u7, byte);
\\}
, &[_][]const u8{
"tmp.zig:2:25: error: destination type 'u7' has 7 bits but source type 'u8' has 8 bits",
});
cases.add("@bitCast with different sizes inside an expression",
\\export fn entry() void {
\\ var foo = (@bitCast(u8, @as(f32, 1.0)) == 0xf);
\\}
, &[_][]const u8{
"tmp.zig:2:25: error: destination type 'u8' has size 1 but source type 'f32' has size 4",
});
cases.add("attempted `&&`",
\\export fn entry(a: bool, b: bool) i32 {
\\ if (a && b) {
\\ return 1234;
\\ }
\\ return 5678;
\\}
, &[_][]const u8{
"tmp.zig:2:12: error: `&&` is invalid. Note that `and` is boolean AND",
});
cases.add("attempted `||` on boolean values",
\\export fn entry(a: bool, b: bool) i32 {
\\ if (a || b) {
\\ return 1234;
\\ }
\\ return 5678;
\\}
, &[_][]const u8{
"tmp.zig:2:9: error: expected error set type, found 'bool'",
"tmp.zig:2:11: note: `||` merges error sets; `or` performs boolean OR",
});
cases.add("compile log a pointer to an opaque value",
\\export fn entry() void {
\\ @compileLog(@ptrCast(*const c_void, &entry));
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: found compile log statement",
});
cases.add("duplicate boolean switch value",
\\comptime {
\\ const x = switch (true) {
\\ true => false,
\\ false => true,
\\ true => false,
\\ };
\\}
\\comptime {
\\ const x = switch (true) {
\\ false => true,
\\ true => false,
\\ false => true,
\\ };
\\}
, &[_][]const u8{
"tmp.zig:5:9: error: duplicate switch value",
"tmp.zig:12:9: error: duplicate switch value",
});
cases.add("missing boolean switch value",
\\comptime {
\\ const x = switch (true) {
\\ true => false,
\\ };
\\}
\\comptime {
\\ const x = switch (true) {
\\ false => true,
\\ };
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: switch must handle all possibilities",
"tmp.zig:7:15: error: switch must handle all possibilities",
});
cases.add("reading past end of pointer casted array",
\\comptime {
\\ const array: [4]u8 = "aoeu".*;
\\ const sub_array = array[1..];
\\ const int_ptr = @ptrCast(*const u24, sub_array);
\\ const deref = int_ptr.*;
\\}
, &[_][]const u8{
"tmp.zig:5:26: error: attempt to read 4 bytes from [4]u8 at index 1 which is 3 bytes",
});
cases.add("error note for function parameter incompatibility",
\\fn do_the_thing(func: fn (arg: i32) void) void {}
\\fn bar(arg: bool) void {}
\\export fn entry() void {
\\ do_the_thing(bar);
\\}
, &[_][]const u8{
"tmp.zig:4:18: error: expected type 'fn(i32) void', found 'fn(bool) void",
"tmp.zig:4:18: note: parameter 0: 'bool' cannot cast into 'i32'",
});
cases.add("cast negative value to unsigned integer",
\\comptime {
\\ const value: i32 = -1;
\\ const unsigned = @intCast(u32, value);
\\}
\\export fn entry1() void {
\\ const value: i32 = -1;
\\ const unsigned: u32 = value;
\\}
, &[_][]const u8{
"tmp.zig:3:36: error: cannot cast negative value -1 to unsigned integer type 'u32'",
"tmp.zig:7:27: error: cannot cast negative value -1 to unsigned integer type 'u32'",
});
cases.add("integer cast truncates bits",
\\export fn entry1() void {
\\ const spartan_count: u16 = 300;
\\ const byte = @intCast(u8, spartan_count);
\\}
\\export fn entry2() void {
\\ const spartan_count: u16 = 300;
\\ const byte: u8 = spartan_count;
\\}
\\export fn entry3() void {
\\ var spartan_count: u16 = 300;
\\ var byte: u8 = spartan_count;
\\}
\\export fn entry4() void {
\\ var signed: i8 = -1;
\\ var unsigned: u64 = signed;
\\}
, &[_][]const u8{
"tmp.zig:3:31: error: integer value 300 cannot be coerced to type 'u8'",
"tmp.zig:7:22: error: integer value 300 cannot be coerced to type 'u8'",
"tmp.zig:11:20: error: expected type 'u8', found 'u16'",
"tmp.zig:11:20: note: unsigned 8-bit int cannot represent all possible unsigned 16-bit values",
"tmp.zig:15:25: error: expected type 'u64', found 'i8'",
"tmp.zig:15:25: note: unsigned 64-bit int cannot represent all possible signed 8-bit values",
});
cases.add("comptime implicit cast f64 to f32",
\\export fn entry() void {
\\ const x: f64 = 16777217;
\\ const y: f32 = x;
\\}
, &[_][]const u8{
"tmp.zig:3:20: error: cast of value 16777217.000000 to type 'f32' loses information",
});
cases.add("implicit cast from f64 to f32",
\\var x: f64 = 1.0;
\\var y: f32 = x;
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(y)); }
, &[_][]const u8{
"tmp.zig:2:14: error: expected type 'f32', found 'f64'",
});
cases.add("exceeded maximum bit width of integer",
\\export fn entry1() void {
\\ const T = u65536;
\\}
\\export fn entry2() void {
\\ var x: i65536 = 1;
\\}
, &[_][]const u8{
"tmp.zig:5:12: error: primitive integer type 'i65536' exceeds maximum bit width of 65535",
});
cases.add("compile error when evaluating return type of inferred error set",
\\const Car = struct {
\\ foo: *SymbolThatDoesNotExist,
\\ pub fn init() !Car {}
\\};
\\export fn entry() void {
\\ const car = Car.init();
\\}
, &[_][]const u8{
"tmp.zig:2:11: error: use of undeclared identifier 'SymbolThatDoesNotExist'",
});
cases.add("don't implicit cast double pointer to *c_void",
\\export fn entry() void {
\\ var a: u32 = 1;
\\ var ptr: *align(@alignOf(u32)) c_void = &a;
\\ var b: *u32 = @ptrCast(*u32, ptr);
\\ var ptr2: *c_void = &b;
\\}
, &[_][]const u8{
"tmp.zig:5:26: error: expected type '*c_void', found '**u32'",
});
cases.add("runtime index into comptime type slice",
\\const Struct = struct {
\\ a: u32,
\\};
\\fn getIndex() usize {
\\ return 2;
\\}
\\export fn entry() void {
\\ const index = getIndex();
\\ const field = @typeInfo(Struct).Struct.fields[index];
\\}
, &[_][]const u8{
"tmp.zig:9:51: error: values of type 'std.builtin.StructField' must be comptime known, but index value is runtime known",
});
cases.add("compile log statement inside function which must be comptime evaluated",
\\fn Foo(comptime T: type) type {
\\ @compileLog(@typeName(T));
\\ return T;
\\}
\\export fn entry() void {
\\ _ = Foo(i32);
\\ _ = @typeName(Foo(i32));
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: found compile log statement",
});
cases.add("comptime slice of an undefined slice",
\\comptime {
\\ var a: []u8 = undefined;
\\ var b = a[0..10];
\\}
, &[_][]const u8{
"tmp.zig:3:14: error: slice of undefined",
});
cases.add("implicit cast const array to mutable slice",
\\export fn entry() void {
\\ const buffer: [1]u8 = [_]u8{8};
\\ const sliceA: []u8 = &buffer;
\\}
, &[_][]const u8{
"tmp.zig:3:27: error: expected type '[]u8', found '*const [1]u8'",
});
cases.add("deref slice and get len field",
\\export fn entry() void {
\\ var a: []u8 = undefined;
\\ _ = a.*.len;
\\}
, &[_][]const u8{
"tmp.zig:3:10: error: attempt to dereference non-pointer type '[]u8'",
});
cases.add("@ptrCast a 0 bit type to a non- 0 bit type",
\\export fn entry() bool {
\\ var x: u0 = 0;
\\ const p = @ptrCast(?*u0, &x);
\\ return p == null;
\\}
, &[_][]const u8{
"tmp.zig:3:15: error: '*u0' and '?*u0' do not have the same in-memory representation",
"tmp.zig:3:31: note: '*u0' has no in-memory bits",
"tmp.zig:3:24: note: '?*u0' has in-memory bits",
});
cases.add("comparing a non-optional pointer against null",
\\export fn entry() void {
\\ var x: i32 = 1;
\\ _ = &x == null;
\\}
, &[_][]const u8{
"tmp.zig:3:12: error: comparison of '*i32' with null",
});
cases.add("non error sets used in merge error sets operator",
\\export fn foo() void {
\\ const Errors = u8 || u16;
\\}
\\export fn bar() void {
\\ const Errors = error{} || u16;
\\}
, &[_][]const u8{
"tmp.zig:2:20: error: expected error set type, found type 'u8'",
"tmp.zig:2:23: note: `||` merges error sets; `or` performs boolean OR",
"tmp.zig:5:31: error: expected error set type, found type 'u16'",
"tmp.zig:5:28: note: `||` merges error sets; `or` performs boolean OR",
});
cases.add("variable initialization compile error then referenced",
\\fn Undeclared() type {
\\ return T;
\\}
\\fn Gen() type {
\\ const X = Undeclared();
\\ return struct {
\\ x: X,
\\ };
\\}
\\export fn entry() void {
\\ const S = Gen();
\\}
, &[_][]const u8{
"tmp.zig:2:12: error: use of undeclared identifier 'T'",
});
cases.add("refer to the type of a generic function",
\\export fn entry() void {
\\ const Func = fn (type) void;
\\ const f: Func = undefined;
\\ f(i32);
\\}
, &[_][]const u8{
"tmp.zig:4:5: error: use of undefined value here causes undefined behavior",
});
cases.add("accessing runtime parameter from outer function",
\\fn outer(y: u32) fn (u32) u32 {
\\ const st = struct {
\\ fn get(z: u32) u32 {
\\ return z + y;
\\ }
\\ };
\\ return st.get;
\\}
\\export fn entry() void {
\\ var func = outer(10);
\\ var x = func(3);
\\}
, &[_][]const u8{
"tmp.zig:4:24: error: 'y' not accessible from inner function",
"tmp.zig:3:28: note: crossed function definition here",
"tmp.zig:1:10: note: declared here",
});
cases.add("non int passed to @intToFloat",
\\export fn entry() void {
\\ const x = @intToFloat(f32, 1.1);
\\}
, &[_][]const u8{
"tmp.zig:2:32: error: expected int type, found 'comptime_float'",
});
cases.add("non float passed to @floatToInt",
\\export fn entry() void {
\\ const x = @floatToInt(i32, @as(i32, 54));
\\}
, &[_][]const u8{
"tmp.zig:2:32: error: expected float type, found 'i32'",
});
cases.add("out of range comptime_int passed to @floatToInt",
\\export fn entry() void {
\\ const x = @floatToInt(i8, 200);
\\}
, &[_][]const u8{
"tmp.zig:2:31: error: integer value 200 cannot be coerced to type 'i8'",
});
cases.add("load too many bytes from comptime reinterpreted pointer",
\\export fn entry() void {
\\ const float: f32 = 5.99999999999994648725e-01;
\\ const float_ptr = &float;
\\ const int_ptr = @ptrCast(*const i64, float_ptr);
\\ const int_val = int_ptr.*;
\\}
, &[_][]const u8{
"tmp.zig:5:28: error: attempt to read 8 bytes from pointer to f32 which is 4 bytes",
});
cases.add("invalid type used in array type",
\\const Item = struct {
\\ field: SomeNonexistentType,
\\};
\\var items: [100]Item = undefined;
\\export fn entry() void {
\\ const a = items[0];
\\}
, &[_][]const u8{
"tmp.zig:2:12: error: use of undeclared identifier 'SomeNonexistentType'",
});
cases.add("comptime continue inside runtime catch",
\\export fn entry(c: bool) void {
\\ const ints = [_]u8{ 1, 2 };
\\ inline for (ints) |_| {
\\ bad() catch |_| continue;
\\ }
\\}
\\fn bad() !void {
\\ return error.Bad;
\\}
, &[_][]const u8{
"tmp.zig:4:25: error: comptime control flow inside runtime block",
"tmp.zig:4:15: note: runtime block created here",
});
cases.add("comptime continue inside runtime switch",
\\export fn entry() void {
\\ var p: i32 = undefined;
\\ comptime var q = true;
\\ inline while (q) {
\\ switch (p) {
\\ 11 => continue,
\\ else => {},
\\ }
\\ q = false;
\\ }
\\}
, &[_][]const u8{
"tmp.zig:6:19: error: comptime control flow inside runtime block",
"tmp.zig:5:9: note: runtime block created here",
});
cases.add("comptime continue inside runtime while error",
\\export fn entry() void {
\\ var p: anyerror!usize = undefined;
\\ comptime var q = true;
\\ outer: inline while (q) {
\\ while (p) |_| {
\\ continue :outer;
\\ } else |_| {}
\\ q = false;
\\ }
\\}
, &[_][]const u8{
"tmp.zig:6:13: error: comptime control flow inside runtime block",
"tmp.zig:5:9: note: runtime block created here",
});
cases.add("comptime continue inside runtime while optional",
\\export fn entry() void {
\\ var p: ?usize = undefined;
\\ comptime var q = true;
\\ outer: inline while (q) {
\\ while (p) |_| continue :outer;
\\ q = false;
\\ }
\\}
, &[_][]const u8{
"tmp.zig:5:23: error: comptime control flow inside runtime block",
"tmp.zig:5:9: note: runtime block created here",
});
cases.add("comptime continue inside runtime while bool",
\\export fn entry() void {
\\ var p: usize = undefined;
\\ comptime var q = true;
\\ outer: inline while (q) {
\\ while (p == 11) continue :outer;
\\ q = false;
\\ }
\\}
, &[_][]const u8{
"tmp.zig:5:25: error: comptime control flow inside runtime block",
"tmp.zig:5:9: note: runtime block created here",
});
cases.add("comptime continue inside runtime if error",
\\export fn entry() void {
\\ var p: anyerror!i32 = undefined;
\\ comptime var q = true;
\\ inline while (q) {
\\ if (p) |_| continue else |_| {}
\\ q = false;
\\ }
\\}
, &[_][]const u8{
"tmp.zig:5:20: error: comptime control flow inside runtime block",
"tmp.zig:5:9: note: runtime block created here",
});
cases.add("comptime continue inside runtime if optional",
\\export fn entry() void {
\\ var p: ?i32 = undefined;
\\ comptime var q = true;
\\ inline while (q) {
\\ if (p) |_| continue;
\\ q = false;
\\ }
\\}
, &[_][]const u8{
"tmp.zig:5:20: error: comptime control flow inside runtime block",
"tmp.zig:5:9: note: runtime block created here",
});
cases.add("comptime continue inside runtime if bool",
\\export fn entry() void {
\\ var p: usize = undefined;
\\ comptime var q = true;
\\ inline while (q) {
\\ if (p == 11) continue;
\\ q = false;
\\ }
\\}
, &[_][]const u8{
"tmp.zig:5:22: error: comptime control flow inside runtime block",
"tmp.zig:5:9: note: runtime block created here",
});
cases.add("switch with invalid expression parameter",
\\export fn entry() void {
\\ Test(i32);
\\}
\\fn Test(comptime T: type) void {
\\ const x = switch (T) {
\\ []u8 => |x| 123,
\\ i32 => |x| 456,
\\ else => unreachable,
\\ };
\\}
, &[_][]const u8{
"tmp.zig:7:17: error: switch on type 'type' provides no expression parameter",
});
cases.add("function prototype with no body",
\\fn foo() void;
\\export fn entry() void {
\\ foo();
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: non-extern function has no body",
});
cases.add("@frame() called outside of function definition",
\\var handle_undef: anyframe = undefined;
\\var handle_dummy: anyframe = @frame();
\\export fn entry() bool {
\\ return handle_undef == handle_dummy;
\\}
, &[_][]const u8{
"tmp.zig:2:30: error: @frame() called outside of function definition",
});
cases.add("`_` is not a declarable symbol",
\\export fn f1() usize {
\\ var _: usize = 2;
\\ return _;
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: `_` is not a declarable symbol",
});
cases.add("`_` should not be usable inside for",
\\export fn returns() void {
\\ for ([_]void{}) |_, i| {
\\ for ([_]void{}) |_, j| {
\\ return _;
\\ }
\\ }
\\}
, &[_][]const u8{
"tmp.zig:4:20: error: `_` may only be used to assign things to",
});
cases.add("`_` should not be usable inside while",
\\export fn returns() void {
\\ while (optionalReturn()) |_| {
\\ while (optionalReturn()) |_| {
\\ return _;
\\ }
\\ }
\\}
\\fn optionalReturn() ?u32 {
\\ return 1;
\\}
, &[_][]const u8{
"tmp.zig:4:20: error: `_` may only be used to assign things to",
});
cases.add("`_` should not be usable inside while else",
\\export fn returns() void {
\\ while (optionalReturnError()) |_| {
\\ while (optionalReturnError()) |_| {
\\ return;
\\ } else |_| {
\\ if (_ == error.optionalReturnError) return;
\\ }
\\ }
\\}
\\fn optionalReturnError() !?u32 {
\\ return error.optionalReturnError;
\\}
, &[_][]const u8{
"tmp.zig:6:17: error: `_` may only be used to assign things to",
});
cases.add("while loop body expression ignored",
\\fn returns() usize {
\\ return 2;
\\}
\\export fn f1() void {
\\ while (true) returns();
\\}
\\export fn f2() void {
\\ var x: ?i32 = null;
\\ while (x) |_| returns();
\\}
\\export fn f3() void {
\\ var x: anyerror!i32 = error.Bad;
\\ while (x) |_| returns() else |_| unreachable;
\\}
, &[_][]const u8{
"tmp.zig:5:25: error: expression value is ignored",
"tmp.zig:9:26: error: expression value is ignored",
"tmp.zig:13:26: error: expression value is ignored",
});
cases.add("missing parameter name of generic function",
\\fn dump(anytype) void {}
\\export fn entry() void {
\\ var a: u8 = 9;
\\ dump(a);
\\}
, &[_][]const u8{
"tmp.zig:1:9: error: missing parameter name",
});
cases.add("non-inline for loop on a type that requires comptime",
\\const Foo = struct {
\\ name: []const u8,
\\ T: type,
\\};
\\export fn entry() void {
\\ const xx: [2]Foo = undefined;
\\ for (xx) |f| {}
\\}
, &[_][]const u8{
"tmp.zig:7:5: error: values of type 'Foo' must be comptime known, but index value is runtime known",
});
cases.add("generic fn as parameter without comptime keyword",
\\fn f(_: fn (anytype) void) void {}
\\fn g(_: anytype) void {}
\\export fn entry() void {
\\ f(g);
\\}
, &[_][]const u8{
"tmp.zig:1:9: error: parameter of type 'fn(anytype) anytype' must be declared comptime",
});
cases.add("optional pointer to void in extern struct",
\\const Foo = extern struct {
\\ x: ?*const void,
\\};
\\const Bar = extern struct {
\\ foo: Foo,
\\ y: i32,
\\};
\\export fn entry(bar: *Bar) void {}
, &[_][]const u8{
"tmp.zig:2:5: error: extern structs cannot contain fields of type '?*const void'",
});
cases.add("use of comptime-known undefined function value",
\\const Cmd = struct {
\\ exec: fn () void,
\\};
\\export fn entry() void {
\\ const command = Cmd{ .exec = undefined };
\\ command.exec();
\\}
, &[_][]const u8{
"tmp.zig:6:12: error: use of undefined value here causes undefined behavior",
});
cases.add("use of comptime-known undefined function value",
\\const Cmd = struct {
\\ exec: fn () void,
\\};
\\export fn entry() void {
\\ const command = Cmd{ .exec = undefined };
\\ command.exec();
\\}
, &[_][]const u8{
"tmp.zig:6:12: error: use of undefined value here causes undefined behavior",
});
cases.add("bad @alignCast at comptime",
\\comptime {
\\ const ptr = @intToPtr(*align(1) i32, 0x1);
\\ const aligned = @alignCast(4, ptr);
\\}
, &[_][]const u8{
"tmp.zig:3:35: error: pointer address 0x1 is not aligned to 4 bytes",
});
cases.add("@ptrToInt on *void",
\\export fn entry() bool {
\\ return @ptrToInt(&{}) == @ptrToInt(&{});
\\}
, &[_][]const u8{
"tmp.zig:2:23: error: pointer to size 0 type has no address",
});
cases.add("@popCount - non-integer",
\\export fn entry(x: f32) u32 {
\\ return @popCount(f32, x);
\\}
, &[_][]const u8{
"tmp.zig:2:22: error: expected integer type, found 'f32'",
});
cases.addCase(x: {
const tc = cases.create("wrong same named struct",
\\const a = @import("a.zig");
\\const b = @import("b.zig");
\\
\\export fn entry() void {
\\ var a1: a.Foo = undefined;
\\ bar(&a1);
\\}
\\
\\fn bar(x: *b.Foo) void {}
, &[_][]const u8{
"tmp.zig:6:10: error: expected type '*b.Foo', found '*a.Foo'",
"tmp.zig:6:10: note: pointer type child 'a.Foo' cannot cast into pointer type child 'b.Foo'",
"a.zig:1:17: note: a.Foo declared here",
"b.zig:1:17: note: b.Foo declared here",
});
tc.addSourceFile("a.zig",
\\pub const Foo = struct {
\\ x: i32,
\\};
);
tc.addSourceFile("b.zig",
\\pub const Foo = struct {
\\ z: f64,
\\};
);
break :x tc;
});
cases.add("@floatToInt comptime safety",
\\comptime {
\\ _ = @floatToInt(i8, @as(f32, -129.1));
\\}
\\comptime {
\\ _ = @floatToInt(u8, @as(f32, -1.1));
\\}
\\comptime {
\\ _ = @floatToInt(u8, @as(f32, 256.1));
\\}
, &[_][]const u8{
"tmp.zig:2:9: error: integer value '-129' cannot be stored in type 'i8'",
"tmp.zig:5:9: error: integer value '-1' cannot be stored in type 'u8'",
"tmp.zig:8:9: error: integer value '256' cannot be stored in type 'u8'",
});
cases.add("use c_void as return type of fn ptr",
\\export fn entry() void {
\\ const a: fn () c_void = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:20: error: return type cannot be opaque",
});
cases.add("use implicit casts to assign null to non-nullable pointer",
\\export fn entry() void {
\\ var x: i32 = 1234;
\\ var p: *i32 = &x;
\\ var pp: *?*i32 = &p;
\\ pp.* = null;
\\ var y = p.*;
\\}
, &[_][]const u8{
"tmp.zig:4:23: error: expected type '*?*i32', found '**i32'",
});
cases.add("attempted implicit cast from T to [*]const T",
\\export fn entry() void {
\\ const x: [*]const bool = true;
\\}
, &[_][]const u8{
"tmp.zig:2:30: error: expected type '[*]const bool', found 'bool'",
});
cases.add("dereference unknown length pointer",
\\export fn entry(x: [*]i32) i32 {
\\ return x.*;
\\}
, &[_][]const u8{
"tmp.zig:2:13: error: index syntax required for unknown-length pointer type '[*]i32'",
});
cases.add("field access of unknown length pointer",
\\const Foo = extern struct {
\\ a: i32,
\\};
\\
\\export fn entry(foo: [*]Foo) void {
\\ foo.a += 1;
\\}
, &[_][]const u8{
"tmp.zig:6:8: error: type '[*]Foo' does not support field access",
});
cases.add("unknown length pointer to opaque",
\\export const T = [*]@Type(.Opaque);
, &[_][]const u8{
"tmp.zig:1:21: error: unknown-length pointer to opaque",
});
cases.add("error when evaluating return type",
\\const Foo = struct {
\\ map: @as(i32, i32),
\\
\\ fn init() Foo {
\\ return undefined;
\\ }
\\};
\\export fn entry() void {
\\ var rule_set = try Foo.init();
\\}
, &[_][]const u8{
"tmp.zig:2:19: error: expected type 'i32', found 'type'",
});
cases.add("slicing single-item pointer",
\\export fn entry(ptr: *i32) void {
\\ const slice = ptr[0..2];
\\}
, &[_][]const u8{
"tmp.zig:2:22: error: slice of single-item pointer",
});
cases.add("indexing single-item pointer",
\\export fn entry(ptr: *i32) i32 {
\\ return ptr[1];
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: index of single-item pointer",
});
cases.add("nested error set mismatch",
\\const NextError = error{NextError};
\\const OtherError = error{OutOfMemory};
\\
\\export fn entry() void {
\\ const a: ?NextError!i32 = foo();
\\}
\\
\\fn foo() ?OtherError!i32 {
\\ return null;
\\}
, &[_][]const u8{
"tmp.zig:5:34: error: expected type '?NextError!i32', found '?OtherError!i32'",
"tmp.zig:5:34: note: optional type child 'OtherError!i32' cannot cast into optional type child 'NextError!i32'",
"tmp.zig:5:34: note: error set 'OtherError' cannot cast into error set 'NextError'",
"tmp.zig:2:26: note: 'error.OutOfMemory' not a member of destination error set",
});
cases.add("invalid deref on switch target",
\\comptime {
\\ var tile = Tile.Empty;
\\ switch (tile.*) {
\\ Tile.Empty => {},
\\ Tile.Filled => {},
\\ }
\\}
\\const Tile = enum {
\\ Empty,
\\ Filled,
\\};
, &[_][]const u8{
"tmp.zig:3:17: error: attempt to dereference non-pointer type 'Tile'",
});
cases.add("invalid field access in comptime",
\\comptime { var x = doesnt_exist.whatever; }
, &[_][]const u8{
"tmp.zig:1:20: error: use of undeclared identifier 'doesnt_exist'",
});
cases.add("suspend inside suspend block",
\\export fn entry() void {
\\ _ = async foo();
\\}
\\fn foo() void {
\\ suspend {
\\ suspend {
\\ }
\\ }
\\}
, &[_][]const u8{
"tmp.zig:6:9: error: cannot suspend inside suspend block",
"tmp.zig:5:5: note: other suspend block here",
});
cases.add("assign inline fn to non-comptime var",
\\export fn entry() void {
\\ var a = b;
\\}
\\inline fn b() void { }
, &[_][]const u8{
"tmp.zig:2:5: error: functions marked inline must be stored in const or comptime var",
"tmp.zig:4:1: note: declared here",
});
cases.add("wrong type passed to @panic",
\\export fn entry() void {
\\ var e = error.Foo;
\\ @panic(e);
\\}
, &[_][]const u8{
"tmp.zig:3:12: error: expected type '[]const u8', found 'error{Foo}'",
});
cases.add("@tagName used on union with no associated enum tag",
\\const FloatInt = extern union {
\\ Float: f32,
\\ Int: i32,
\\};
\\export fn entry() void {
\\ var fi = FloatInt{.Float = 123.45};
\\ var tagName = @tagName(fi);
\\}
, &[_][]const u8{
"tmp.zig:7:19: error: union has no associated enum",
"tmp.zig:1:18: note: declared here",
});
cases.add("returning error from void async function",
\\export fn entry() void {
\\ _ = async amain();
\\}
\\fn amain() callconv(.Async) void {
\\ return error.ShouldBeCompileError;
\\}
, &[_][]const u8{
"tmp.zig:5:17: error: expected type 'void', found 'error{ShouldBeCompileError}'",
});
cases.add("var makes structs required to be comptime known",
\\export fn entry() void {
\\ const S = struct{v: anytype};
\\ var s = S{.v=@as(i32, 10)};
\\}
, &[_][]const u8{
"tmp.zig:3:4: error: variable of type 'S' must be const or comptime",
});
cases.add("@ptrCast discards const qualifier",
\\export fn entry() void {
\\ const x: i32 = 1234;
\\ const y = @ptrCast(*i32, &x);
\\}
, &[_][]const u8{
"tmp.zig:3:15: error: cast discards const qualifier",
});
cases.add("comptime slice of undefined pointer non-zero len",
\\export fn entry() void {
\\ const slice = @as([*]i32, undefined)[0..1];
\\}
, &[_][]const u8{
"tmp.zig:2:41: error: non-zero length slice of undefined pointer",
});
cases.add("type checking function pointers",
\\fn a(b: fn (*const u8) void) void {
\\ b('a');
\\}
\\fn c(d: u8) void {}
\\export fn entry() void {
\\ a(c);
\\}
, &[_][]const u8{
"tmp.zig:6:7: error: expected type 'fn(*const u8) void', found 'fn(u8) void'",
});
cases.add("no else prong on switch on global error set",
\\export fn entry() void {
\\ foo(error.A);
\\}
\\fn foo(a: anyerror) void {
\\ switch (a) {
\\ error.A => {},
\\ }
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: else prong required when switching on type 'anyerror'",
});
cases.add("error not handled in switch",
\\export fn entry() void {
\\ foo(452) catch |err| switch (err) {
\\ error.Foo => {},
\\ };
\\}
\\fn foo(x: i32) !void {
\\ switch (x) {
\\ 0 ... 10 => return error.Foo,
\\ 11 ... 20 => return error.Bar,
\\ 21 ... 30 => return error.Baz,
\\ else => {},
\\ }
\\}
, &[_][]const u8{
"tmp.zig:2:26: error: error.Baz not handled in switch",
"tmp.zig:2:26: error: error.Bar not handled in switch",
});
cases.add("duplicate error in switch",
\\export fn entry() void {
\\ foo(452) catch |err| switch (err) {
\\ error.Foo => {},
\\ error.Bar => {},
\\ error.Foo => {},
\\ else => {},
\\ };
\\}
\\fn foo(x: i32) !void {
\\ switch (x) {
\\ 0 ... 10 => return error.Foo,
\\ 11 ... 20 => return error.Bar,
\\ else => {},
\\ }
\\}
, &[_][]const u8{
"tmp.zig:5:14: error: duplicate switch value: '@TypeOf(foo).ReturnType.ErrorSet.Foo'",
"tmp.zig:3:14: note: other value is here",
});
cases.add("invalid cast from integral type to enum",
\\const E = enum(usize) { One, Two };
\\
\\export fn entry() void {
\\ foo(1);
\\}
\\
\\fn foo(x: usize) void {
\\ switch (x) {
\\ E.One => {},
\\ }
\\}
, &[_][]const u8{
"tmp.zig:9:10: error: expected type 'usize', found 'E'",
});
cases.add("range operator in switch used on error set",
\\export fn entry() void {
\\ try foo(452) catch |err| switch (err) {
\\ error.A ... error.B => {},
\\ else => {},
\\ };
\\}
\\fn foo(x: i32) !void {
\\ switch (x) {
\\ 0 ... 10 => return error.Foo,
\\ 11 ... 20 => return error.Bar,
\\ else => {},
\\ }
\\}
, &[_][]const u8{
"tmp.zig:3:17: error: operator not allowed for errors",
});
cases.add("inferring error set of function pointer",
\\comptime {
\\ const z: ?fn()!void = null;
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: inferring error set of return type valid only for function definitions",
});
cases.add("access non-existent member of error set",
\\const Foo = error{A};
\\comptime {
\\ const z = Foo.Bar;
\\}
, &[_][]const u8{
"tmp.zig:3:18: error: no error named 'Bar' in 'Foo'",
});
cases.add("error union operator with non error set LHS",
\\comptime {
\\ const z = i32!i32;
\\ var x: z = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: expected error set type, found type 'i32'",
});
cases.add("error equality but sets have no common members",
\\const Set1 = error{A, C};
\\const Set2 = error{B, D};
\\export fn entry() void {
\\ foo(Set1.A);
\\}
\\fn foo(x: Set1) void {
\\ if (x == Set2.B) {
\\
\\ }
\\}
, &[_][]const u8{
"tmp.zig:7:11: error: error sets 'Set1' and 'Set2' have no common errors",
});
cases.add("only equality binary operator allowed for error sets",
\\comptime {
\\ const z = error.A > error.B;
\\}
, &[_][]const u8{
"tmp.zig:2:23: error: operator not allowed for errors",
});
cases.add("explicit error set cast known at comptime violates error sets",
\\const Set1 = error {A, B};
\\const Set2 = error {A, C};
\\comptime {
\\ var x = Set1.B;
\\ var y = @errSetCast(Set2, x);
\\}
, &[_][]const u8{
"tmp.zig:5:13: error: error.B not a member of error set 'Set2'",
});
cases.add("cast error union of global error set to error union of smaller error set",
\\const SmallErrorSet = error{A};
\\export fn entry() void {
\\ var x: SmallErrorSet!i32 = foo();
\\}
\\fn foo() anyerror!i32 {
\\ return error.B;
\\}
, &[_][]const u8{
"tmp.zig:3:35: error: expected type 'SmallErrorSet!i32', found 'anyerror!i32'",
"tmp.zig:3:35: note: error set 'anyerror' cannot cast into error set 'SmallErrorSet'",
"tmp.zig:3:35: note: cannot cast global error set into smaller set",
});
cases.add("cast global error set to error set",
\\const SmallErrorSet = error{A};
\\export fn entry() void {
\\ var x: SmallErrorSet = foo();
\\}
\\fn foo() anyerror {
\\ return error.B;
\\}
, &[_][]const u8{
"tmp.zig:3:31: error: expected type 'SmallErrorSet', found 'anyerror'",
"tmp.zig:3:31: note: cannot cast global error set into smaller set",
});
cases.add("recursive inferred error set",
\\export fn entry() void {
\\ foo() catch unreachable;
\\}
\\fn foo() !void {
\\ try foo();
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: cannot resolve inferred error set '@TypeOf(foo).ReturnType.ErrorSet': function 'foo' not fully analyzed yet",
});
cases.add("implicit cast of error set not a subset",
\\const Set1 = error{A, B};
\\const Set2 = error{A, C};
\\export fn entry() void {
\\ foo(Set1.B);
\\}
\\fn foo(set1: Set1) void {
\\ var x: Set2 = set1;
\\}
, &[_][]const u8{
"tmp.zig:7:19: error: expected type 'Set2', found 'Set1'",
"tmp.zig:1:23: note: 'error.B' not a member of destination error set",
});
cases.add("int to err global invalid number",
\\const Set1 = error{
\\ A,
\\ B,
\\};
\\comptime {
\\ var x: u16 = 3;
\\ var y = @intToError(x);
\\}
, &[_][]const u8{
"tmp.zig:7:13: error: integer value 3 represents no error",
});
cases.add("int to err non global invalid number",
\\const Set1 = error{
\\ A,
\\ B,
\\};
\\const Set2 = error{
\\ A,
\\ C,
\\};
\\comptime {
\\ var x = @errorToInt(Set1.B);
\\ var y = @errSetCast(Set2, @intToError(x));
\\}
, &[_][]const u8{
"tmp.zig:11:13: error: error.B not a member of error set 'Set2'",
});
cases.add("duplicate error value in error set",
\\const Foo = error {
\\ Bar,
\\ Bar,
\\};
\\export fn entry() void {
\\ const a: Foo = undefined;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: duplicate error: 'Bar'",
"tmp.zig:2:5: note: other error here",
});
cases.add("cast negative integer literal to usize",
\\export fn entry() void {
\\ const x = @as(usize, -10);
\\}
, &[_][]const u8{
"tmp.zig:2:26: error: cannot cast negative value -10 to unsigned integer type 'usize'",
});
cases.add("use invalid number literal as array index",
\\var v = 25;
\\export fn entry() void {
\\ var arr: [v]u8 = undefined;
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: unable to infer variable type",
});
cases.add("duplicate struct field",
\\const Foo = struct {
\\ Bar: i32,
\\ Bar: usize,
\\};
\\export fn entry() void {
\\ const a: Foo = undefined;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: duplicate struct field: 'Bar'",
"tmp.zig:2:5: note: other field here",
});
cases.add("duplicate union field",
\\const Foo = union {
\\ Bar: i32,
\\ Bar: usize,
\\};
\\export fn entry() void {
\\ const a: Foo = undefined;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: duplicate union field: 'Bar'",
"tmp.zig:2:5: note: other field here",
});
cases.add("duplicate enum field",
\\const Foo = enum {
\\ Bar,
\\ Bar,
\\};
\\
\\export fn entry() void {
\\ const a: Foo = undefined;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: duplicate enum field: 'Bar'",
"tmp.zig:2:5: note: other field here",
});
cases.add("calling function with naked calling convention",
\\export fn entry() void {
\\ foo();
\\}
\\fn foo() callconv(.Naked) void { }
, &[_][]const u8{
"tmp.zig:2:5: error: unable to call function with naked calling convention",
"tmp.zig:4:1: note: declared here",
});
cases.add("function with invalid return type",
\\export fn foo() boid {}
, &[_][]const u8{
"tmp.zig:1:17: error: use of undeclared identifier 'boid'",
});
cases.add("function with non-extern non-packed enum parameter",
\\const Foo = enum { A, B, C };
\\export fn entry(foo: Foo) void { }
, &[_][]const u8{
"tmp.zig:2:22: error: parameter of type 'Foo' not allowed in function with calling convention 'C'",
});
cases.add("function with non-extern non-packed struct parameter",
\\const Foo = struct {
\\ A: i32,
\\ B: f32,
\\ C: bool,
\\};
\\export fn entry(foo: Foo) void { }
, &[_][]const u8{
"tmp.zig:6:22: error: parameter of type 'Foo' not allowed in function with calling convention 'C'",
});
cases.add("function with non-extern non-packed union parameter",
\\const Foo = union {
\\ A: i32,
\\ B: f32,
\\ C: bool,
\\};
\\export fn entry(foo: Foo) void { }
, &[_][]const u8{
"tmp.zig:6:22: error: parameter of type 'Foo' not allowed in function with calling convention 'C'",
});
cases.add("switch on enum with 1 field with no prongs",
\\const Foo = enum { M };
\\
\\export fn entry() void {
\\ var f = Foo.M;
\\ switch (f) {}
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: enumeration value 'Foo.M' not handled in switch",
});
cases.add("shift by negative comptime integer",
\\comptime {
\\ var a = 1 >> -1;
\\}
, &[_][]const u8{
"tmp.zig:2:18: error: shift by negative value -1",
});
cases.add("@panic called at compile time",
\\export fn entry() void {
\\ comptime {
\\ @panic("aoeu",);
\\ }
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: encountered @panic at compile-time",
});
cases.add("wrong return type for main",
\\pub fn main() f32 { }
, &[_][]const u8{
"error: expected return type of main to be 'void', '!void', 'noreturn', 'u8', or '!u8'",
});
cases.add("double ?? on main return value",
\\pub fn main() ??void {
\\}
, &[_][]const u8{
"error: expected return type of main to be 'void', '!void', 'noreturn', 'u8', or '!u8'",
});
cases.add("bad identifier in function with struct defined inside function which references local const",
\\export fn entry() void {
\\ const BlockKind = u32;
\\
\\ const Block = struct {
\\ kind: BlockKind,
\\ };
\\
\\ bogus;
\\}
, &[_][]const u8{
"tmp.zig:8:5: error: use of undeclared identifier 'bogus'",
});
cases.add("labeled break not found",
\\export fn entry() void {
\\ blah: while (true) {
\\ while (true) {
\\ break :outer;
\\ }
\\ }
\\}
, &[_][]const u8{
"tmp.zig:4:13: error: label not found: 'outer'",
});
cases.add("labeled continue not found",
\\export fn entry() void {
\\ var i: usize = 0;
\\ blah: while (i < 10) : (i += 1) {
\\ while (true) {
\\ continue :outer;
\\ }
\\ }
\\}
, &[_][]const u8{
"tmp.zig:5:13: error: labeled loop not found: 'outer'",
});
cases.add("attempt to use 0 bit type in extern fn",
\\extern fn foo(ptr: fn(*void) callconv(.C) void) void;
\\
\\export fn entry() void {
\\ foo(bar);
\\}
\\
\\fn bar(x: *void) callconv(.C) void { }
\\export fn entry2() void {
\\ bar(&{});
\\}
, &[_][]const u8{
"tmp.zig:1:23: error: parameter of type '*void' has 0 bits; not allowed in function with calling convention 'C'",
"tmp.zig:7:11: error: parameter of type '*void' has 0 bits; not allowed in function with calling convention 'C'",
});
cases.add("implicit semicolon - block statement",
\\export fn entry() void {
\\ {}
\\ var good = {};
\\ ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - block expr",
\\export fn entry() void {
\\ _ = {};
\\ var good = {};
\\ _ = {}
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - comptime statement",
\\export fn entry() void {
\\ comptime {}
\\ var good = {};
\\ comptime ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - comptime expression",
\\export fn entry() void {
\\ _ = comptime {};
\\ var good = {};
\\ _ = comptime {}
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - defer",
\\export fn entry() void {
\\ defer {}
\\ var good = {};
\\ defer ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - if statement",
\\export fn entry() void {
\\ if(true) {}
\\ var good = {};
\\ if(true) ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - if expression",
\\export fn entry() void {
\\ _ = if(true) {};
\\ var good = {};
\\ _ = if(true) {}
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - if-else statement",
\\export fn entry() void {
\\ if(true) {} else {}
\\ var good = {};
\\ if(true) ({}) else ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - if-else expression",
\\export fn entry() void {
\\ _ = if(true) {} else {};
\\ var good = {};
\\ _ = if(true) {} else {}
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - if-else-if statement",
\\export fn entry() void {
\\ if(true) {} else if(true) {}
\\ var good = {};
\\ if(true) ({}) else if(true) ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - if-else-if expression",
\\export fn entry() void {
\\ _ = if(true) {} else if(true) {};
\\ var good = {};
\\ _ = if(true) {} else if(true) {}
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - if-else-if-else statement",
\\export fn entry() void {
\\ if(true) {} else if(true) {} else {}
\\ var good = {};
\\ if(true) ({}) else if(true) ({}) else ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - if-else-if-else expression",
\\export fn entry() void {
\\ _ = if(true) {} else if(true) {} else {};
\\ var good = {};
\\ _ = if(true) {} else if(true) {} else {}
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - test statement",
\\export fn entry() void {
\\ if (foo()) |_| {}
\\ var good = {};
\\ if (foo()) |_| ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - test expression",
\\export fn entry() void {
\\ _ = if (foo()) |_| {};
\\ var good = {};
\\ _ = if (foo()) |_| {}
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - while statement",
\\export fn entry() void {
\\ while(true) {}
\\ var good = {};
\\ while(true) ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - while expression",
\\export fn entry() void {
\\ _ = while(true) {};
\\ var good = {};
\\ _ = while(true) {}
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - while-continue statement",
\\export fn entry() void {
\\ while(true):({}) {}
\\ var good = {};
\\ while(true):({}) ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - while-continue expression",
\\export fn entry() void {
\\ _ = while(true):({}) {};
\\ var good = {};
\\ _ = while(true):({}) {}
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - for statement",
\\export fn entry() void {
\\ for(foo()) |_| {}
\\ var good = {};
\\ for(foo()) |_| ({})
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("implicit semicolon - for expression",
\\export fn entry() void {
\\ _ = for(foo()) |_| {};
\\ var good = {};
\\ _ = for(foo()) |_| {}
\\ var bad = {};
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: expected token ';', found 'var'",
});
cases.add("multiple function definitions",
\\fn a() void {}
\\fn a() void {}
\\export fn entry() void { a(); }
, &[_][]const u8{
"tmp.zig:2:1: error: redefinition of 'a'",
});
cases.add("unreachable with return",
\\fn a() noreturn {return;}
\\export fn entry() void { a(); }
, &[_][]const u8{
"tmp.zig:1:18: error: expected type 'noreturn', found 'void'",
});
cases.add("control reaches end of non-void function",
\\fn a() i32 {}
\\export fn entry() void { _ = a(); }
, &[_][]const u8{
"tmp.zig:1:12: error: expected type 'i32', found 'void'",
});
cases.add("undefined function call",
\\export fn a() void {
\\ b();
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: use of undeclared identifier 'b'",
});
cases.add("wrong number of arguments",
\\export fn a() void {
\\ b(1);
\\}
\\fn b(a: i32, b: i32, c: i32) void { }
, &[_][]const u8{
"tmp.zig:2:6: error: expected 3 arguments, found 1",
});
cases.add("invalid type",
\\fn a() bogus {}
\\export fn entry() void { _ = a(); }
, &[_][]const u8{
"tmp.zig:1:8: error: use of undeclared identifier 'bogus'",
});
cases.add("pointer to noreturn",
\\fn a() *noreturn {}
\\export fn entry() void { _ = a(); }
, &[_][]const u8{
"tmp.zig:1:9: error: pointer to noreturn not allowed",
});
cases.add("unreachable code",
\\export fn a() void {
\\ return;
\\ b();
\\}
\\
\\fn b() void {}
, &[_][]const u8{
"tmp.zig:3:5: error: unreachable code",
});
cases.add("bad import",
\\const bogus = @import("bogus-does-not-exist.zig",);
\\export fn entry() void { bogus.bogo(); }
, &[_][]const u8{
"tmp.zig:1:15: error: unable to find 'bogus-does-not-exist.zig'",
});
cases.add("undeclared identifier",
\\export fn a() void {
\\ return
\\ b +
\\ c;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undeclared identifier 'b'",
});
cases.add("parameter redeclaration",
\\fn f(a : i32, a : i32) void {
\\}
\\export fn entry() void { f(1, 2); }
, &[_][]const u8{
"tmp.zig:1:15: error: redeclaration of variable 'a'",
});
cases.add("local variable redeclaration",
\\export fn f() void {
\\ const a : i32 = 0;
\\ const a = 0;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: redeclaration of variable 'a'",
});
cases.add("local variable redeclares parameter",
\\fn f(a : i32) void {
\\ const a = 0;
\\}
\\export fn entry() void { f(1); }
, &[_][]const u8{
"tmp.zig:2:5: error: redeclaration of variable 'a'",
});
cases.add("variable has wrong type",
\\export fn f() i32 {
\\ const a = "a";
\\ return a;
\\}
, &[_][]const u8{
"tmp.zig:3:12: error: expected type 'i32', found '*const [1:0]u8'",
});
cases.add("if condition is bool, not int",
\\export fn f() void {
\\ if (0) {}
\\}
, &[_][]const u8{
"tmp.zig:2:9: error: expected type 'bool', found 'comptime_int'",
});
cases.add("assign unreachable",
\\export fn f() void {
\\ const a = return;
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: unreachable code",
});
cases.add("unreachable variable",
\\export fn f() void {
\\ const a: noreturn = {};
\\}
, &[_][]const u8{
"tmp.zig:2:25: error: expected type 'noreturn', found 'void'",
});
cases.add("unreachable parameter",
\\fn f(a: noreturn) void {}
\\export fn entry() void { f(); }
, &[_][]const u8{
"tmp.zig:1:9: error: parameter of type 'noreturn' not allowed",
});
cases.add("assign to constant variable",
\\export fn f() void {
\\ const a = 3;
\\ a = 4;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: cannot assign to constant",
});
cases.add("use of undeclared identifier",
\\export fn f() void {
\\ b = 3;
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: use of undeclared identifier 'b'",
});
cases.add("const is a statement, not an expression",
\\export fn f() void {
\\ (const a = 0);
\\}
, &[_][]const u8{
"tmp.zig:2:6: error: invalid token: 'const'",
});
cases.add("array access of undeclared identifier",
\\export fn f() void {
\\ i[i] = i[i];
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: use of undeclared identifier 'i'",
});
cases.add("array access of non array",
\\export fn f() void {
\\ var bad : bool = undefined;
\\ bad[0] = bad[0];
\\}
\\export fn g() void {
\\ var bad : bool = undefined;
\\ _ = bad[0];
\\}
, &[_][]const u8{
"tmp.zig:3:8: error: array access of non-array type 'bool'",
"tmp.zig:7:12: error: array access of non-array type 'bool'",
});
cases.add("array access with non integer index",
\\export fn f() void {
\\ var array = "aoeu";
\\ var bad = false;
\\ array[bad] = array[bad];
\\}
\\export fn g() void {
\\ var array = "aoeu";
\\ var bad = false;
\\ _ = array[bad];
\\}
, &[_][]const u8{
"tmp.zig:4:11: error: expected type 'usize', found 'bool'",
"tmp.zig:9:15: error: expected type 'usize', found 'bool'",
});
cases.add("write to const global variable",
\\const x : i32 = 99;
\\fn f() void {
\\ x = 1;
\\}
\\export fn entry() void { f(); }
, &[_][]const u8{
"tmp.zig:3:9: error: cannot assign to constant",
});
cases.add("missing else clause",
\\fn f(b: bool) void {
\\ const x : i32 = if (b) h: { break :h 1; };
\\}
\\fn g(b: bool) void {
\\ const y = if (b) h: { break :h @as(i32, 1); };
\\}
\\export fn entry() void { f(true); g(true); }
, &[_][]const u8{
"tmp.zig:2:21: error: expected type 'i32', found 'void'",
"tmp.zig:5:15: error: incompatible types: 'i32' and 'void'",
});
cases.add("invalid struct field",
\\const A = struct { x : i32, };
\\export fn f() void {
\\ var a : A = undefined;
\\ a.foo = 1;
\\ const y = a.bar;
\\}
\\export fn g() void {
\\ var a : A = undefined;
\\ const y = a.bar;
\\}
, &[_][]const u8{
"tmp.zig:4:6: error: no member named 'foo' in struct 'A'",
"tmp.zig:9:16: error: no member named 'bar' in struct 'A'",
});
cases.add("redefinition of struct",
\\const A = struct { x : i32, };
\\const A = struct { y : i32, };
, &[_][]const u8{
"tmp.zig:2:1: error: redefinition of 'A'",
});
cases.add("redefinition of enums",
\\const A = enum {};
\\const A = enum {};
, &[_][]const u8{
"tmp.zig:2:1: error: redefinition of 'A'",
});
cases.add("redefinition of global variables",
\\var a : i32 = 1;
\\var a : i32 = 2;
, &[_][]const u8{
"tmp.zig:2:1: error: redefinition of 'a'",
"tmp.zig:1:1: note: previous definition is here",
});
cases.add("duplicate field in struct value expression",
\\const A = struct {
\\ x : i32,
\\ y : i32,
\\ z : i32,
\\};
\\export fn f() void {
\\ const a = A {
\\ .z = 1,
\\ .y = 2,
\\ .x = 3,
\\ .z = 4,
\\ };
\\}
, &[_][]const u8{
"tmp.zig:11:9: error: duplicate field",
});
cases.add("missing field in struct value expression",
\\const A = struct {
\\ x : i32,
\\ y : i32,
\\ z : i32,
\\};
\\export fn f() void {
\\ // we want the error on the '{' not the 'A' because
\\ // the A could be a complicated expression
\\ const a = A {
\\ .z = 4,
\\ .y = 2,
\\ };
\\}
, &[_][]const u8{
"tmp.zig:9:17: error: missing field: 'x'",
});
cases.add("invalid field in struct value expression",
\\const A = struct {
\\ x : i32,
\\ y : i32,
\\ z : i32,
\\};
\\export fn f() void {
\\ const a = A {
\\ .z = 4,
\\ .y = 2,
\\ .foo = 42,
\\ };
\\}
, &[_][]const u8{
"tmp.zig:10:9: error: no member named 'foo' in struct 'A'",
});
cases.add("invalid break expression",
\\export fn f() void {
\\ break;
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: break expression outside loop",
});
cases.add("invalid continue expression",
\\export fn f() void {
\\ continue;
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: continue expression outside loop",
});
cases.add("invalid maybe type",
\\export fn f() void {
\\ if (true) |x| { }
\\}
, &[_][]const u8{
"tmp.zig:2:9: error: expected optional type, found 'bool'",
});
cases.add("cast unreachable",
\\fn f() i32 {
\\ return @as(i32, return 1);
\\}
\\export fn entry() void { _ = f(); }
, &[_][]const u8{
"tmp.zig:2:12: error: unreachable code",
});
cases.add("invalid builtin fn",
\\fn f() @bogus(foo) {
\\}
\\export fn entry() void { _ = f(); }
, &[_][]const u8{
"tmp.zig:1:8: error: invalid builtin function: 'bogus'",
});
cases.add("noalias on non pointer param",
\\fn f(noalias x: i32) void {}
\\export fn entry() void { f(1234); }
, &[_][]const u8{
"tmp.zig:1:6: error: noalias on non-pointer parameter",
});
cases.add("struct init syntax for array",
\\const foo = [3]u16{ .x = 1024 };
\\comptime {
\\ _ = foo;
\\}
, &[_][]const u8{
"tmp.zig:1:21: error: type '[3]u16' does not support struct initialization syntax",
});
cases.add("type variables must be constant",
\\var foo = u8;
\\export fn entry() foo {
\\ return 1;
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: variable of type 'type' must be constant",
});
cases.add("variables shadowing types",
\\const Foo = struct {};
\\const Bar = struct {};
\\
\\fn f(Foo: i32) void {
\\ var Bar : i32 = undefined;
\\}
\\
\\export fn entry() void {
\\ f(1234);
\\}
, &[_][]const u8{
"tmp.zig:4:6: error: redefinition of 'Foo'",
"tmp.zig:1:1: note: previous definition is here",
"tmp.zig:5:5: error: redefinition of 'Bar'",
"tmp.zig:2:1: note: previous definition is here",
});
cases.add("switch expression - missing enumeration prong",
\\const Number = enum {
\\ One,
\\ Two,
\\ Three,
\\ Four,
\\};
\\fn f(n: Number) i32 {
\\ switch (n) {
\\ Number.One => 1,
\\ Number.Two => 2,
\\ Number.Three => @as(i32, 3),
\\ }
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:8:5: error: enumeration value 'Number.Four' not handled in switch",
});
cases.add("switch expression - duplicate enumeration prong",
\\const Number = enum {
\\ One,
\\ Two,
\\ Three,
\\ Four,
\\};
\\fn f(n: Number) i32 {
\\ switch (n) {
\\ Number.One => 1,
\\ Number.Two => 2,
\\ Number.Three => @as(i32, 3),
\\ Number.Four => 4,
\\ Number.Two => 2,
\\ }
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:13:15: error: duplicate switch value",
"tmp.zig:10:15: note: other value is here",
});
cases.add("switch expression - duplicate enumeration prong when else present",
\\const Number = enum {
\\ One,
\\ Two,
\\ Three,
\\ Four,
\\};
\\fn f(n: Number) i32 {
\\ switch (n) {
\\ Number.One => 1,
\\ Number.Two => 2,
\\ Number.Three => @as(i32, 3),
\\ Number.Four => 4,
\\ Number.Two => 2,
\\ else => 10,
\\ }
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:13:15: error: duplicate switch value",
"tmp.zig:10:15: note: other value is here",
});
cases.add("switch expression - multiple else prongs",
\\fn f(x: u32) void {
\\ const value: bool = switch (x) {
\\ 1234 => false,
\\ else => true,
\\ else => true,
\\ };
\\}
\\export fn entry() void {
\\ f(1234);
\\}
, &[_][]const u8{
"tmp.zig:5:9: error: multiple else prongs in switch expression",
});
cases.add("switch expression - non exhaustive integer prongs",
\\fn foo(x: u8) void {
\\ switch (x) {
\\ 0 => {},
\\ }
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:2:5: error: switch must handle all possibilities",
});
cases.add("switch expression - duplicate or overlapping integer value",
\\fn foo(x: u8) u8 {
\\ return switch (x) {
\\ 0 ... 100 => @as(u8, 0),
\\ 101 ... 200 => 1,
\\ 201, 203 ... 207 => 2,
\\ 206 ... 255 => 3,
\\ };
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:6:9: error: duplicate switch value",
"tmp.zig:5:14: note: previous value is here",
});
cases.add("switch expression - duplicate type",
\\fn foo(comptime T: type, x: T) u8 {
\\ return switch (T) {
\\ u32 => 0,
\\ u64 => 1,
\\ u32 => 2,
\\ else => 3,
\\ };
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(foo(u32, 0))); }
, &[_][]const u8{
"tmp.zig:5:9: error: duplicate switch value",
"tmp.zig:3:9: note: previous value is here",
});
cases.add("switch expression - duplicate type (struct alias)",
\\const Test = struct {
\\ bar: i32,
\\};
\\const Test2 = Test;
\\fn foo(comptime T: type, x: T) u8 {
\\ return switch (T) {
\\ Test => 0,
\\ u64 => 1,
\\ Test2 => 2,
\\ else => 3,
\\ };
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(foo(u32, 0))); }
, &[_][]const u8{
"tmp.zig:9:9: error: duplicate switch value",
"tmp.zig:7:9: note: previous value is here",
});
cases.add("switch expression - switch on pointer type with no else",
\\fn foo(x: *u8) void {
\\ switch (x) {
\\ &y => {},
\\ }
\\}
\\const y: u8 = 100;
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:2:5: error: else prong required when switching on type '*u8'",
});
cases.add("global variable initializer must be constant expression",
\\extern fn foo() i32;
\\const x = foo();
\\export fn entry() i32 { return x; }
, &[_][]const u8{
"tmp.zig:2:11: error: unable to evaluate constant expression",
});
cases.add("array concatenation with wrong type",
\\const src = "aoeu";
\\const derp: usize = 1234;
\\const a = derp ++ "foo";
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(a)); }
, &[_][]const u8{
"tmp.zig:3:11: error: expected array, found 'usize'",
});
cases.add("non compile time array concatenation",
\\fn f() []u8 {
\\ return s ++ "foo";
\\}
\\var s: [10]u8 = undefined;
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:2:12: error: unable to evaluate constant expression",
});
cases.add("@cImport with bogus include",
\\const c = @cImport(@cInclude("bogus.h"));
\\export fn entry() usize { return @sizeOf(@TypeOf(c.bogo)); }
, &[_][]const u8{
"tmp.zig:1:11: error: C import failed",
".h:1:10: note: 'bogus.h' file not found",
});
cases.add("address of number literal",
\\const x = 3;
\\const y = &x;
\\fn foo() *const i32 { return y; }
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:3:30: error: expected type '*const i32', found '*const comptime_int'",
});
cases.add("integer overflow error",
\\const x : u8 = 300;
\\export fn entry() usize { return @sizeOf(@TypeOf(x)); }
, &[_][]const u8{
"tmp.zig:1:16: error: integer value 300 cannot be coerced to type 'u8'",
});
cases.add("invalid shift amount error",
\\const x : u8 = 2;
\\fn f() u16 {
\\ return x << 8;
\\}
\\export fn entry() u16 { return f(); }
, &[_][]const u8{
"tmp.zig:3:17: error: integer value 8 cannot be coerced to type 'u3'",
});
cases.add("missing function call param",
\\const Foo = struct {
\\ a: i32,
\\ b: i32,
\\
\\ fn member_a(foo: *const Foo) i32 {
\\ return foo.a;
\\ }
\\ fn member_b(foo: *const Foo) i32 {
\\ return foo.b;
\\ }
\\};
\\
\\const member_fn_type = @TypeOf(Foo.member_a);
\\const members = [_]member_fn_type {
\\ Foo.member_a,
\\ Foo.member_b,
\\};
\\
\\fn f(foo: *const Foo, index: usize) void {
\\ const result = members[index]();
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:20:34: error: expected 1 arguments, found 0",
});
cases.add("missing function name",
\\fn () void {}
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:1:1: error: missing function name",
});
cases.add("missing param name",
\\fn f(i32) void {}
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:1:6: error: missing parameter name",
});
cases.add("wrong function type",
\\const fns = [_]fn() void { a, b, c };
\\fn a() i32 {return 0;}
\\fn b() i32 {return 1;}
\\fn c() i32 {return 2;}
\\export fn entry() usize { return @sizeOf(@TypeOf(fns)); }
, &[_][]const u8{
"tmp.zig:1:28: error: expected type 'fn() void', found 'fn() i32'",
});
cases.add("extern function pointer mismatch",
\\const fns = [_](fn(i32)i32) { a, b, c };
\\pub fn a(x: i32) i32 {return x + 0;}
\\pub fn b(x: i32) i32 {return x + 1;}
\\export fn c(x: i32) i32 {return x + 2;}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(fns)); }
, &[_][]const u8{
"tmp.zig:1:37: error: expected type 'fn(i32) i32', found 'fn(i32) callconv(.C) i32'",
});
cases.add("colliding invalid top level functions",
\\fn func() bogus {}
\\fn func() bogus {}
\\export fn entry() usize { return @sizeOf(@TypeOf(func)); }
, &[_][]const u8{
"tmp.zig:2:1: error: redefinition of 'func'",
});
cases.add("non constant expression in array size",
\\const Foo = struct {
\\ y: [get()]u8,
\\};
\\var global_var: usize = 1;
\\fn get() usize { return global_var; }
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(Foo)); }
, &[_][]const u8{
"tmp.zig:5:25: error: cannot store runtime value in compile time variable",
"tmp.zig:2:12: note: called from here",
});
cases.add("addition with non numbers",
\\const Foo = struct {
\\ field: i32,
\\};
\\const x = Foo {.field = 1} + Foo {.field = 2};
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(x)); }
, &[_][]const u8{
"tmp.zig:4:28: error: invalid operands to binary expression: 'Foo' and 'Foo'",
});
cases.add("division by zero",
\\const lit_int_x = 1 / 0;
\\const lit_float_x = 1.0 / 0.0;
\\const int_x = @as(u32, 1) / @as(u32, 0);
\\const float_x = @as(f32, 1.0) / @as(f32, 0.0);
\\
\\export fn entry1() usize { return @sizeOf(@TypeOf(lit_int_x)); }
\\export fn entry2() usize { return @sizeOf(@TypeOf(lit_float_x)); }
\\export fn entry3() usize { return @sizeOf(@TypeOf(int_x)); }
\\export fn entry4() usize { return @sizeOf(@TypeOf(float_x)); }
, &[_][]const u8{
"tmp.zig:1:21: error: division by zero",
"tmp.zig:2:25: error: division by zero",
"tmp.zig:3:27: error: division by zero",
"tmp.zig:4:31: error: division by zero",
});
cases.add("normal string with newline",
\\const foo = "a
\\b";
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:1:15: error: newline not allowed in string literal",
});
cases.add("invalid comparison for function pointers",
\\fn foo() void {}
\\const invalid = foo > foo;
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(invalid)); }
, &[_][]const u8{
"tmp.zig:2:21: error: operator not allowed for type 'fn() void'",
});
cases.add("generic function instance with non-constant expression",
\\fn foo(comptime x: i32, y: i32) i32 { return x + y; }
\\fn test1(a: i32, b: i32) i32 {
\\ return foo(a, b);
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(test1)); }
, &[_][]const u8{
"tmp.zig:3:16: error: unable to evaluate constant expression",
});
cases.add("assign null to non-optional pointer",
\\const a: *u8 = null;
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(a)); }
, &[_][]const u8{
"tmp.zig:1:16: error: expected type '*u8', found '(null)'",
});
cases.add("indexing an array of size zero",
\\const array = [_]u8{};
\\export fn foo() void {
\\ const pointer = &array[0];
\\}
, &[_][]const u8{
"tmp.zig:3:27: error: accessing a zero length array is not allowed",
});
cases.add("indexing an array of size zero with runtime index",
\\const array = [_]u8{};
\\export fn foo() void {
\\ var index: usize = 0;
\\ const pointer = &array[index];
\\}
, &[_][]const u8{
"tmp.zig:4:27: error: accessing a zero length array is not allowed",
});
cases.add("compile time division by zero",
\\const y = foo(0);
\\fn foo(x: u32) u32 {
\\ return 1 / x;
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(y)); }
, &[_][]const u8{
"tmp.zig:3:14: error: division by zero",
"tmp.zig:1:14: note: referenced here",
});
cases.add("branch on undefined value",
\\const x = if (undefined) true else false;
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(x)); }
, &[_][]const u8{
"tmp.zig:1:15: error: use of undefined value here causes undefined behavior",
});
cases.add("div on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a / a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("div assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a /= a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("mod on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a % a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("mod assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a %= a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("add on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a + a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("add assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a += a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("add wrap on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a +% a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("add wrap assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a +%= a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("sub on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a - a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("sub assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a -= a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("sub wrap on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a -% a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("sub wrap assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a -%= a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("mult on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a * a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("mult assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a *= a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("mult wrap on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a *% a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("mult wrap assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a *%= a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("shift left on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a << 2;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("shift left assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a <<= 2;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("shift right on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a >> 2;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("shift left assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a >>= 2;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("bin and on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a & a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("bin and assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a &= a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("bin or on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a | a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("bin or assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a |= a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("bin xor on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = a ^ a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("bin xor assign on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ a ^= a;
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: use of undefined value here causes undefined behavior",
});
cases.add("comparison operators with undefined value",
\\// operator ==
\\comptime {
\\ var a: i64 = undefined;
\\ var x: i32 = 0;
\\ if (a == a) x += 1;
\\}
\\// operator !=
\\comptime {
\\ var a: i64 = undefined;
\\ var x: i32 = 0;
\\ if (a != a) x += 1;
\\}
\\// operator >
\\comptime {
\\ var a: i64 = undefined;
\\ var x: i32 = 0;
\\ if (a > a) x += 1;
\\}
\\// operator <
\\comptime {
\\ var a: i64 = undefined;
\\ var x: i32 = 0;
\\ if (a < a) x += 1;
\\}
\\// operator >=
\\comptime {
\\ var a: i64 = undefined;
\\ var x: i32 = 0;
\\ if (a >= a) x += 1;
\\}
\\// operator <=
\\comptime {
\\ var a: i64 = undefined;
\\ var x: i32 = 0;
\\ if (a <= a) x += 1;
\\}
, &[_][]const u8{
"tmp.zig:5:11: error: use of undefined value here causes undefined behavior",
"tmp.zig:11:11: error: use of undefined value here causes undefined behavior",
"tmp.zig:17:11: error: use of undefined value here causes undefined behavior",
"tmp.zig:23:11: error: use of undefined value here causes undefined behavior",
"tmp.zig:29:11: error: use of undefined value here causes undefined behavior",
"tmp.zig:35:11: error: use of undefined value here causes undefined behavior",
});
cases.add("and on undefined value",
\\comptime {
\\ var a: bool = undefined;
\\ _ = a and a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("or on undefined value",
\\comptime {
\\ var a: bool = undefined;
\\ _ = a or a;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: use of undefined value here causes undefined behavior",
});
cases.add("negate on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = -a;
\\}
, &[_][]const u8{
"tmp.zig:3:10: error: use of undefined value here causes undefined behavior",
});
cases.add("negate wrap on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = -%a;
\\}
, &[_][]const u8{
"tmp.zig:3:11: error: use of undefined value here causes undefined behavior",
});
cases.add("bin not on undefined value",
\\comptime {
\\ var a: i64 = undefined;
\\ _ = ~a;
\\}
, &[_][]const u8{
"tmp.zig:3:10: error: use of undefined value here causes undefined behavior",
});
cases.add("bool not on undefined value",
\\comptime {
\\ var a: bool = undefined;
\\ _ = !a;
\\}
, &[_][]const u8{
"tmp.zig:3:10: error: use of undefined value here causes undefined behavior",
});
cases.add("orelse on undefined value",
\\comptime {
\\ var a: ?bool = undefined;
\\ _ = a orelse false;
\\}
, &[_][]const u8{
"tmp.zig:3:11: error: use of undefined value here causes undefined behavior",
});
cases.add("catch on undefined value",
\\comptime {
\\ var a: anyerror!bool = undefined;
\\ _ = a catch |err| false;
\\}
, &[_][]const u8{
"tmp.zig:3:11: error: use of undefined value here causes undefined behavior",
});
cases.add("deref on undefined value",
\\comptime {
\\ var a: *u8 = undefined;
\\ _ = a.*;
\\}
, &[_][]const u8{
"tmp.zig:3:9: error: attempt to dereference undefined value",
});
cases.add("endless loop in function evaluation",
\\const seventh_fib_number = fibbonaci(7);
\\fn fibbonaci(x: i32) i32 {
\\ return fibbonaci(x - 1) + fibbonaci(x - 2);
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(seventh_fib_number)); }
, &[_][]const u8{
"tmp.zig:3:21: error: evaluation exceeded 1000 backwards branches",
"tmp.zig:1:37: note: referenced here",
"tmp.zig:6:50: note: referenced here",
});
cases.add("@embedFile with bogus file",
\\const resource = @embedFile("bogus.txt",);
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(resource)); }
, &[_][]const u8{
"tmp.zig:1:29: error: unable to find '",
"bogus.txt'",
});
cases.add("non-const expression in struct literal outside function",
\\const Foo = struct {
\\ x: i32,
\\};
\\const a = Foo {.x = get_it()};
\\extern fn get_it() i32;
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(a)); }
, &[_][]const u8{
"tmp.zig:4:21: error: unable to evaluate constant expression",
});
cases.add("non-const expression function call with struct return value outside function",
\\const Foo = struct {
\\ x: i32,
\\};
\\const a = get_it();
\\fn get_it() Foo {
\\ global_side_effect = true;
\\ return Foo {.x = 13};
\\}
\\var global_side_effect = false;
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(a)); }
, &[_][]const u8{
"tmp.zig:6:26: error: unable to evaluate constant expression",
"tmp.zig:4:17: note: referenced here",
});
cases.add("undeclared identifier error should mark fn as impure",
\\export fn foo() void {
\\ test_a_thing();
\\}
\\fn test_a_thing() void {
\\ bad_fn_call();
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: use of undeclared identifier 'bad_fn_call'",
});
cases.add("illegal comparison of types",
\\fn bad_eql_1(a: []u8, b: []u8) bool {
\\ return a == b;
\\}
\\const EnumWithData = union(enum) {
\\ One: void,
\\ Two: i32,
\\};
\\fn bad_eql_2(a: *const EnumWithData, b: *const EnumWithData) bool {
\\ return a.* == b.*;
\\}
\\
\\export fn entry1() usize { return @sizeOf(@TypeOf(bad_eql_1)); }
\\export fn entry2() usize { return @sizeOf(@TypeOf(bad_eql_2)); }
, &[_][]const u8{
"tmp.zig:2:14: error: operator not allowed for type '[]u8'",
"tmp.zig:9:16: error: operator not allowed for type 'EnumWithData'",
});
cases.add("non-const switch number literal",
\\export fn foo() void {
\\ const x = switch (bar()) {
\\ 1, 2 => 1,
\\ 3, 4 => 2,
\\ else => 3,
\\ };
\\}
\\fn bar() i32 {
\\ return 2;
\\}
, &[_][]const u8{
"tmp.zig:5:17: error: cannot store runtime value in type 'comptime_int'",
});
cases.add("atomic orderings of cmpxchg - failure stricter than success",
\\const AtomicOrder = @import("builtin").AtomicOrder;
\\export fn f() void {
\\ var x: i32 = 1234;
\\ while (!@cmpxchgWeak(i32, &x, 1234, 5678, AtomicOrder.Monotonic, AtomicOrder.SeqCst)) {}
\\}
, &[_][]const u8{
"tmp.zig:4:81: error: failure atomic ordering must be no stricter than success",
});
cases.add("atomic orderings of cmpxchg - success Monotonic or stricter",
\\const AtomicOrder = @import("builtin").AtomicOrder;
\\export fn f() void {
\\ var x: i32 = 1234;
\\ while (!@cmpxchgWeak(i32, &x, 1234, 5678, AtomicOrder.Unordered, AtomicOrder.Unordered)) {}
\\}
, &[_][]const u8{
"tmp.zig:4:58: error: success atomic ordering must be Monotonic or stricter",
});
cases.add("negation overflow in function evaluation",
\\const y = neg(-128);
\\fn neg(x: i8) i8 {
\\ return -x;
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(y)); }
, &[_][]const u8{
"tmp.zig:3:12: error: negation caused overflow",
"tmp.zig:1:14: note: referenced here",
});
cases.add("add overflow in function evaluation",
\\const y = add(65530, 10);
\\fn add(a: u16, b: u16) u16 {
\\ return a + b;
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(y)); }
, &[_][]const u8{
"tmp.zig:3:14: error: operation caused overflow",
"tmp.zig:1:14: note: referenced here",
});
cases.add("sub overflow in function evaluation",
\\const y = sub(10, 20);
\\fn sub(a: u16, b: u16) u16 {
\\ return a - b;
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(y)); }
, &[_][]const u8{
"tmp.zig:3:14: error: operation caused overflow",
"tmp.zig:1:14: note: referenced here",
});
cases.add("mul overflow in function evaluation",
\\const y = mul(300, 6000);
\\fn mul(a: u16, b: u16) u16 {
\\ return a * b;
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(y)); }
, &[_][]const u8{
"tmp.zig:3:14: error: operation caused overflow",
"tmp.zig:1:14: note: referenced here",
});
cases.add("truncate sign mismatch",
\\fn f() i8 {
\\ var x: u32 = 10;
\\ return @truncate(i8, x);
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:3:26: error: expected signed integer type, found 'u32'",
});
cases.add("try in function with non error return type",
\\export fn f() void {
\\ try something();
\\}
\\fn something() anyerror!void { }
, &[_][]const u8{
"tmp.zig:2:5: error: expected type 'void', found 'anyerror'",
});
cases.add("invalid pointer for var type",
\\extern fn ext() usize;
\\var bytes: [ext()]u8 = undefined;
\\export fn f() void {
\\ for (bytes) |*b, i| {
\\ b.* = @as(u8, i);
\\ }
\\}
, &[_][]const u8{
"tmp.zig:2:13: error: unable to evaluate constant expression",
});
cases.add("export function with comptime parameter",
\\export fn foo(comptime x: i32, y: i32) i32{
\\ return x + y;
\\}
, &[_][]const u8{
"tmp.zig:1:15: error: comptime parameter not allowed in function with calling convention 'C'",
});
cases.add("extern function with comptime parameter",
\\extern fn foo(comptime x: i32, y: i32) i32;
\\fn f() i32 {
\\ return foo(1, 2);
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:1:15: error: comptime parameter not allowed in function with calling convention 'C'",
});
cases.add("non-pure function returns type",
\\var a: u32 = 0;
\\pub fn List(comptime T: type) type {
\\ a += 1;
\\ return SmallList(T, 8);
\\}
\\
\\pub fn SmallList(comptime T: type, comptime STATIC_SIZE: usize) type {
\\ return struct {
\\ items: []T,
\\ length: usize,
\\ prealloc_items: [STATIC_SIZE]T,
\\ };
\\}
\\
\\export fn function_with_return_type_type() void {
\\ var list: List(i32) = undefined;
\\ list.length = 10;
\\}
, &[_][]const u8{
"tmp.zig:3:7: error: unable to evaluate constant expression",
"tmp.zig:16:19: note: referenced here",
});
cases.add("bogus method call on slice",
\\var self = "aoeu";
\\fn f(m: []const u8) void {
\\ m.copy(u8, self[0..], m);
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:3:6: error: no member named 'copy' in '[]const u8'",
});
cases.add("wrong number of arguments for method fn call",
\\const Foo = struct {
\\ fn method(self: *const Foo, a: i32) void {}
\\};
\\fn f(foo: *const Foo) void {
\\
\\ foo.method(1, 2);
\\}
\\export fn entry() usize { return @sizeOf(@TypeOf(f)); }
, &[_][]const u8{
"tmp.zig:6:15: error: expected 2 arguments, found 3",
});
cases.add("assign through constant pointer",
\\export fn f() void {
\\ var cstr = "Hat";
\\ cstr[0] = 'W';
\\}
, &[_][]const u8{
"tmp.zig:3:13: error: cannot assign to constant",
});
cases.add("assign through constant slice",
\\export fn f() void {
\\ var cstr: []const u8 = "Hat";
\\ cstr[0] = 'W';
\\}
, &[_][]const u8{
"tmp.zig:3:13: error: cannot assign to constant",
});
cases.add("main function with bogus args type",
\\pub fn main(args: [][]bogus) !void {}
, &[_][]const u8{
"tmp.zig:1:23: error: use of undeclared identifier 'bogus'",
});
cases.add("misspelled type with pointer only reference",
\\const JasonHM = u8;
\\const JasonList = *JsonNode;
\\
\\const JsonOA = union(enum) {
\\ JSONArray: JsonList,
\\ JSONObject: JasonHM,
\\};
\\
\\const JsonType = union(enum) {
\\ JSONNull: void,
\\ JSONInteger: isize,
\\ JSONDouble: f64,
\\ JSONBool: bool,
\\ JSONString: []u8,
\\ JSONArray: void,
\\ JSONObject: void,
\\};
\\
\\pub const JsonNode = struct {
\\ kind: JsonType,
\\ jobject: ?JsonOA,
\\};
\\
\\fn foo() void {
\\ var jll: JasonList = undefined;
\\ jll.init(1234);
\\ var jd = JsonNode {.kind = JsonType.JSONArray , .jobject = JsonOA.JSONArray {jll} };
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:5:16: error: use of undeclared identifier 'JsonList'",
});
cases.add("method call with first arg type primitive",
\\const Foo = struct {
\\ x: i32,
\\
\\ fn init(x: i32) Foo {
\\ return Foo {
\\ .x = x,
\\ };
\\ }
\\};
\\
\\export fn f() void {
\\ const derp = Foo.init(3);
\\
\\ derp.init();
\\}
, &[_][]const u8{
"tmp.zig:14:5: error: expected type 'i32', found 'Foo'",
});
cases.add("method call with first arg type wrong container",
\\pub const List = struct {
\\ len: usize,
\\ allocator: *Allocator,
\\
\\ pub fn init(allocator: *Allocator) List {
\\ return List {
\\ .len = 0,
\\ .allocator = allocator,
\\ };
\\ }
\\};
\\
\\pub var global_allocator = Allocator {
\\ .field = 1234,
\\};
\\
\\pub const Allocator = struct {
\\ field: i32,
\\};
\\
\\export fn foo() void {
\\ var x = List.init(&global_allocator);
\\ x.init();
\\}
, &[_][]const u8{
"tmp.zig:23:5: error: expected type '*Allocator', found '*List'",
});
cases.add("binary not on number literal",
\\const TINY_QUANTUM_SHIFT = 4;
\\const TINY_QUANTUM_SIZE = 1 << TINY_QUANTUM_SHIFT;
\\var block_aligned_stuff: usize = (4 + TINY_QUANTUM_SIZE) & ~(TINY_QUANTUM_SIZE - 1);
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(block_aligned_stuff)); }
, &[_][]const u8{
"tmp.zig:3:60: error: unable to perform binary not operation on type 'comptime_int'",
});
cases.addCase(x: {
const tc = cases.create("multiple files with private function error",
\\const foo = @import("foo.zig",);
\\
\\export fn callPrivFunction() void {
\\ foo.privateFunction();
\\}
, &[_][]const u8{
"tmp.zig:4:8: error: 'privateFunction' is private",
"foo.zig:1:1: note: declared here",
});
tc.addSourceFile("foo.zig",
\\fn privateFunction() void { }
);
break :x tc;
});
cases.addCase(x: {
const tc = cases.create("multiple files with private member instance function (canonical invocation) error",
\\const Foo = @import("foo.zig",).Foo;
\\
\\export fn callPrivFunction() void {
\\ var foo = Foo{};
\\ Foo.privateFunction(foo);
\\}
, &[_][]const u8{
"tmp.zig:5:8: error: 'privateFunction' is private",
"foo.zig:2:5: note: declared here",
});
tc.addSourceFile("foo.zig",
\\pub const Foo = struct {
\\ fn privateFunction(self: *Foo) void { }
\\};
);
break :x tc;
});
cases.addCase(x: {
const tc = cases.create("multiple files with private member instance function error",
\\const Foo = @import("foo.zig",).Foo;
\\
\\export fn callPrivFunction() void {
\\ var foo = Foo{};
\\ foo.privateFunction();
\\}
, &[_][]const u8{
"tmp.zig:5:8: error: 'privateFunction' is private",
"foo.zig:2:5: note: declared here",
});
tc.addSourceFile("foo.zig",
\\pub const Foo = struct {
\\ fn privateFunction(self: *Foo) void { }
\\};
);
break :x tc;
});
cases.add("container init with non-type",
\\const zero: i32 = 0;
\\const a = zero{1};
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(a)); }
, &[_][]const u8{
"tmp.zig:2:11: error: expected type 'type', found 'i32'",
});
cases.add("assign to constant field",
\\const Foo = struct {
\\ field: i32,
\\};
\\export fn derp() void {
\\ const f = Foo {.field = 1234,};
\\ f.field = 0;
\\}
, &[_][]const u8{
"tmp.zig:6:15: error: cannot assign to constant",
});
cases.add("return from defer expression",
\\pub fn testTrickyDefer() !void {
\\ defer canFail() catch {};
\\
\\ defer try canFail();
\\
\\ const a = maybeInt() orelse return;
\\}
\\
\\fn canFail() anyerror!void { }
\\
\\pub fn maybeInt() ?i32 {
\\ return 0;
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(testTrickyDefer)); }
, &[_][]const u8{
"tmp.zig:4:11: error: cannot return from defer expression",
});
cases.add("assign too big number to u16",
\\export fn foo() void {
\\ var vga_mem: u16 = 0xB8000;
\\}
, &[_][]const u8{
"tmp.zig:2:24: error: integer value 753664 cannot be coerced to type 'u16'",
});
cases.add("global variable alignment non power of 2",
\\const some_data: [100]u8 align(3) = undefined;
\\export fn entry() usize { return @sizeOf(@TypeOf(some_data)); }
, &[_][]const u8{
"tmp.zig:1:32: error: alignment value 3 is not a power of 2",
});
cases.add("function alignment non power of 2",
\\extern fn foo() align(3) void;
\\export fn entry() void { return foo(); }
, &[_][]const u8{
"tmp.zig:1:23: error: alignment value 3 is not a power of 2",
});
cases.add("compile log",
\\export fn foo() void {
\\ comptime bar(12, "hi",);
\\}
\\fn bar(a: i32, b: []const u8) void {
\\ @compileLog("begin",);
\\ @compileLog("a", a, "b", b);
\\ @compileLog("end",);
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: found compile log statement",
"tmp.zig:6:5: error: found compile log statement",
"tmp.zig:7:5: error: found compile log statement",
});
cases.add("casting bit offset pointer to regular pointer",
\\const BitField = packed struct {
\\ a: u3,
\\ b: u3,
\\ c: u2,
\\};
\\
\\fn foo(bit_field: *const BitField) u3 {
\\ return bar(&bit_field.b);
\\}
\\
\\fn bar(x: *const u3) u3 {
\\ return x.*;
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:8:26: error: expected type '*const u3', found '*align(:3:1) const u3'",
});
cases.add("referring to a struct that is invalid",
\\const UsbDeviceRequest = struct {
\\ Type: u8,
\\};
\\
\\export fn foo() void {
\\ comptime assert(@sizeOf(UsbDeviceRequest) == 0x8);
\\}
\\
\\fn assert(ok: bool) void {
\\ if (!ok) unreachable;
\\}
, &[_][]const u8{
"tmp.zig:10:14: error: unable to evaluate constant expression",
"tmp.zig:6:20: note: referenced here",
});
cases.add("control flow uses comptime var at runtime",
\\export fn foo() void {
\\ comptime var i = 0;
\\ while (i < 5) : (i += 1) {
\\ bar();
\\ }
\\}
\\
\\fn bar() void { }
, &[_][]const u8{
"tmp.zig:3:5: error: control flow attempts to use compile-time variable at runtime",
"tmp.zig:3:24: note: compile-time variable assigned here",
});
cases.add("ignored return value",
\\export fn foo() void {
\\ bar();
\\}
\\fn bar() i32 { return 0; }
, &[_][]const u8{
"tmp.zig:2:8: error: expression value is ignored",
});
cases.add("ignored assert-err-ok return value",
\\export fn foo() void {
\\ bar() catch unreachable;
\\}
\\fn bar() anyerror!i32 { return 0; }
, &[_][]const u8{
"tmp.zig:2:11: error: expression value is ignored",
});
cases.add("ignored statement value",
\\export fn foo() void {
\\ 1;
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: expression value is ignored",
});
cases.add("ignored comptime statement value",
\\export fn foo() void {
\\ comptime {1;}
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: expression value is ignored",
});
cases.add("ignored comptime value",
\\export fn foo() void {
\\ comptime 1;
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: expression value is ignored",
});
cases.add("ignored defered statement value",
\\export fn foo() void {
\\ defer {1;}
\\}
, &[_][]const u8{
"tmp.zig:2:12: error: expression value is ignored",
});
cases.add("ignored defered function call",
\\export fn foo() void {
\\ defer bar();
\\}
\\fn bar() anyerror!i32 { return 0; }
, &[_][]const u8{
"tmp.zig:2:14: error: expression value is ignored",
});
cases.add("dereference an array",
\\var s_buffer: [10]u8 = undefined;
\\pub fn pass(in: []u8) []u8 {
\\ var out = &s_buffer;
\\ out.*.* = in[0];
\\ return out.*[0..1];
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(pass)); }
, &[_][]const u8{
"tmp.zig:4:10: error: attempt to dereference non-pointer type '[10]u8'",
});
cases.add("pass const ptr to mutable ptr fn",
\\fn foo() bool {
\\ const a = @as([]const u8, "a",);
\\ const b = &a;
\\ return ptrEql(b, b);
\\}
\\fn ptrEql(a: *[]const u8, b: *[]const u8) bool {
\\ return true;
\\}
\\
\\export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
, &[_][]const u8{
"tmp.zig:4:19: error: expected type '*[]const u8', found '*const []const u8'",
});
cases.addCase(x: {
const tc = cases.create("export collision",
\\const foo = @import("foo.zig",);
\\
\\export fn bar() usize {
\\ return foo.baz;
\\}
, &[_][]const u8{
"foo.zig:1:1: error: exported symbol collision: 'bar'",
"tmp.zig:3:1: note: other symbol here",
});
tc.addSourceFile("foo.zig",
\\export fn bar() void {}
\\pub const baz = 1234;
);
break :x tc;
});
cases.add("implicit cast from array to mutable slice",
\\var global_array: [10]i32 = undefined;
\\fn foo(param: []i32) void {}
\\export fn entry() void {
\\ foo(global_array);
\\}
, &[_][]const u8{
"tmp.zig:4:9: error: expected type '[]i32', found '[10]i32'",
});
cases.add("ptrcast to non-pointer",
\\export fn entry(a: *i32) usize {
\\ return @ptrCast(usize, a);
\\}
, &[_][]const u8{
"tmp.zig:2:21: error: expected pointer, found 'usize'",
});
cases.add("asm at compile time",
\\comptime {
\\ doSomeAsm();
\\}
\\
\\fn doSomeAsm() void {
\\ asm volatile (
\\ \\.globl aoeu;
\\ \\.type aoeu, @function;
\\ \\.set aoeu, derp;
\\ );
\\}
, &[_][]const u8{
"tmp.zig:6:5: error: unable to evaluate constant expression",
});
cases.add("invalid member of builtin enum",
\\const builtin = @import("builtin",);
\\export fn entry() void {
\\ const foo = builtin.Arch.x86;
\\}
, &[_][]const u8{
"tmp.zig:3:29: error: container 'std.target.Arch' has no member called 'x86'",
});
cases.add("int to ptr of 0 bits",
\\export fn foo() void {
\\ var x: usize = 0x1000;
\\ var y: *void = @intToPtr(*void, x);
\\}
, &[_][]const u8{
"tmp.zig:3:30: error: type '*void' has 0 bits and cannot store information",
});
cases.add("@fieldParentPtr - non struct",
\\const Foo = i32;
\\export fn foo(a: *i32) *Foo {
\\ return @fieldParentPtr(Foo, "a", a);
\\}
, &[_][]const u8{
"tmp.zig:3:28: error: expected struct type, found 'i32'",
});
cases.add("@fieldParentPtr - bad field name",
\\const Foo = extern struct {
\\ derp: i32,
\\};
\\export fn foo(a: *i32) *Foo {
\\ return @fieldParentPtr(Foo, "a", a);
\\}
, &[_][]const u8{
"tmp.zig:5:33: error: struct 'Foo' has no field 'a'",
});
cases.add("@fieldParentPtr - field pointer is not pointer",
\\const Foo = extern struct {
\\ a: i32,
\\};
\\export fn foo(a: i32) *Foo {
\\ return @fieldParentPtr(Foo, "a", a);
\\}
, &[_][]const u8{
"tmp.zig:5:38: error: expected pointer, found 'i32'",
});
cases.add("@fieldParentPtr - comptime field ptr not based on struct",
\\const Foo = struct {
\\ a: i32,
\\ b: i32,
\\};
\\const foo = Foo { .a = 1, .b = 2, };
\\
\\comptime {
\\ const field_ptr = @intToPtr(*i32, 0x1234);
\\ const another_foo_ptr = @fieldParentPtr(Foo, "b", field_ptr);
\\}
, &[_][]const u8{
"tmp.zig:9:55: error: pointer value not based on parent struct",
});
cases.add("@fieldParentPtr - comptime wrong field index",
\\const Foo = struct {
\\ a: i32,
\\ b: i32,
\\};
\\const foo = Foo { .a = 1, .b = 2, };
\\
\\comptime {
\\ const another_foo_ptr = @fieldParentPtr(Foo, "b", &foo.a);
\\}
, &[_][]const u8{
"tmp.zig:8:29: error: field 'b' has index 1 but pointer value is index 0 of struct 'Foo'",
});
cases.add("@byteOffsetOf - non struct",
\\const Foo = i32;
\\export fn foo() usize {
\\ return @byteOffsetOf(Foo, "a",);
\\}
, &[_][]const u8{
"tmp.zig:3:26: error: expected struct type, found 'i32'",
});
cases.add("@byteOffsetOf - bad field name",
\\const Foo = struct {
\\ derp: i32,
\\};
\\export fn foo() usize {
\\ return @byteOffsetOf(Foo, "a",);
\\}
, &[_][]const u8{
"tmp.zig:5:31: error: struct 'Foo' has no field 'a'",
});
cases.addExe("missing main fn in executable",
\\
, &[_][]const u8{
"error: root source file has no member called 'main'",
});
cases.addExe("private main fn",
\\fn main() void {}
, &[_][]const u8{
"error: 'main' is private",
"tmp.zig:1:1: note: declared here",
});
cases.add("setting a section on a local variable",
\\export fn entry() i32 {
\\ var foo: i32 linksection(".text2") = 1234;
\\ return foo;
\\}
, &[_][]const u8{
"tmp.zig:2:30: error: cannot set section of local variable 'foo'",
});
cases.add("inner struct member shadowing outer struct member",
\\fn A() type {
\\ return struct {
\\ b: B(),
\\
\\ const Self = @This();
\\
\\ fn B() type {
\\ return struct {
\\ const Self = @This();
\\ };
\\ }
\\ };
\\}
\\comptime {
\\ assert(A().B().Self != A().Self);
\\}
\\fn assert(ok: bool) void {
\\ if (!ok) unreachable;
\\}
, &[_][]const u8{
"tmp.zig:9:17: error: redefinition of 'Self'",
"tmp.zig:5:9: note: previous definition is here",
});
cases.add("while expected bool, got optional",
\\export fn foo() void {
\\ while (bar()) {}
\\}
\\fn bar() ?i32 { return 1; }
, &[_][]const u8{
"tmp.zig:2:15: error: expected type 'bool', found '?i32'",
});
cases.add("while expected bool, got error union",
\\export fn foo() void {
\\ while (bar()) {}
\\}
\\fn bar() anyerror!i32 { return 1; }
, &[_][]const u8{
"tmp.zig:2:15: error: expected type 'bool', found 'anyerror!i32'",
});
cases.add("while expected optional, got bool",
\\export fn foo() void {
\\ while (bar()) |x| {}
\\}
\\fn bar() bool { return true; }
, &[_][]const u8{
"tmp.zig:2:15: error: expected optional type, found 'bool'",
});
cases.add("while expected optional, got error union",
\\export fn foo() void {
\\ while (bar()) |x| {}
\\}
\\fn bar() anyerror!i32 { return 1; }
, &[_][]const u8{
"tmp.zig:2:15: error: expected optional type, found 'anyerror!i32'",
});
cases.add("while expected error union, got bool",
\\export fn foo() void {
\\ while (bar()) |x| {} else |err| {}
\\}
\\fn bar() bool { return true; }
, &[_][]const u8{
"tmp.zig:2:15: error: expected error union type, found 'bool'",
});
cases.add("while expected error union, got optional",
\\export fn foo() void {
\\ while (bar()) |x| {} else |err| {}
\\}
\\fn bar() ?i32 { return 1; }
, &[_][]const u8{
"tmp.zig:2:15: error: expected error union type, found '?i32'",
});
// TODO test this in stage2, but we won't even try in stage1
//cases.add("inline fn calls itself indirectly",
// \\export fn foo() void {
// \\ bar();
// \\}
// \\inline fn bar() void {
// \\ baz();
// \\ quux();
// \\}
// \\inline fn baz() void {
// \\ bar();
// \\ quux();
// \\}
// \\extern fn quux() void;
//, &[_][]const u8{
// "tmp.zig:4:1: error: unable to inline function",
//});
//cases.add("save reference to inline function",
// \\export fn foo() void {
// \\ quux(@ptrToInt(bar));
// \\}
// \\inline fn bar() void { }
// \\extern fn quux(usize) void;
//, &[_][]const u8{
// "tmp.zig:4:1: error: unable to inline function",
//});
cases.add("signed integer division",
\\export fn foo(a: i32, b: i32) i32 {
\\ return a / b;
\\}
, &[_][]const u8{
"tmp.zig:2:14: error: division with 'i32' and 'i32': signed integers must use @divTrunc, @divFloor, or @divExact",
});
cases.add("signed integer remainder division",
\\export fn foo(a: i32, b: i32) i32 {
\\ return a % b;
\\}
, &[_][]const u8{
"tmp.zig:2:14: error: remainder division with 'i32' and 'i32': signed integers and floats must use @rem or @mod",
});
cases.add("compile-time division by zero",
\\comptime {
\\ const a: i32 = 1;
\\ const b: i32 = 0;
\\ const c = a / b;
\\}
, &[_][]const u8{
"tmp.zig:4:17: error: division by zero",
});
cases.add("compile-time remainder division by zero",
\\comptime {
\\ const a: i32 = 1;
\\ const b: i32 = 0;
\\ const c = a % b;
\\}
, &[_][]const u8{
"tmp.zig:4:17: error: division by zero",
});
cases.add("@setRuntimeSafety twice for same scope",
\\export fn foo() void {
\\ @setRuntimeSafety(false);
\\ @setRuntimeSafety(false);
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: runtime safety set twice for same scope",
"tmp.zig:2:5: note: first set here",
});
cases.add("@setFloatMode twice for same scope",
\\export fn foo() void {
\\ @setFloatMode(@import("builtin").FloatMode.Optimized);
\\ @setFloatMode(@import("builtin").FloatMode.Optimized);
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: float mode set twice for same scope",
"tmp.zig:2:5: note: first set here",
});
cases.add("array access of type",
\\export fn foo() void {
\\ var b: u8[40] = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:14: error: array access of non-array type 'type'",
});
cases.add("cannot break out of defer expression",
\\export fn foo() void {
\\ while (true) {
\\ defer {
\\ break;
\\ }
\\ }
\\}
, &[_][]const u8{
"tmp.zig:4:13: error: cannot break out of defer expression",
});
cases.add("cannot continue out of defer expression",
\\export fn foo() void {
\\ while (true) {
\\ defer {
\\ continue;
\\ }
\\ }
\\}
, &[_][]const u8{
"tmp.zig:4:13: error: cannot continue out of defer expression",
});
cases.add("calling a generic function only known at runtime",
\\var foos = [_]fn(anytype) void { foo1, foo2 };
\\
\\fn foo1(arg: anytype) void {}
\\fn foo2(arg: anytype) void {}
\\
\\pub fn main() !void {
\\ foos[0](true);
\\}
, &[_][]const u8{
"tmp.zig:7:9: error: calling a generic function requires compile-time known function value",
});
cases.add("@compileError shows traceback of references that caused it",
\\const foo = @compileError("aoeu",);
\\
\\const bar = baz + foo;
\\const baz = 1;
\\
\\export fn entry() i32 {
\\ return bar;
\\}
, &[_][]const u8{
"tmp.zig:1:13: error: aoeu",
"tmp.zig:3:19: note: referenced here",
"tmp.zig:7:12: note: referenced here",
});
cases.add("float literal too large error",
\\comptime {
\\ const a = 0x1.0p18495;
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: float literal out of range of any type",
});
cases.add("float literal too small error (denormal)",
\\comptime {
\\ const a = 0x1.0p-19000;
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: float literal out of range of any type",
});
cases.add("explicit cast float literal to integer when there is a fraction component",
\\export fn entry() i32 {
\\ return @as(i32, 12.34);
\\}
, &[_][]const u8{
"tmp.zig:2:21: error: fractional component prevents float value 12.340000 from being casted to type 'i32'",
});
cases.add("non pointer given to @ptrToInt",
\\export fn entry(x: i32) usize {
\\ return @ptrToInt(x);
\\}
, &[_][]const u8{
"tmp.zig:2:22: error: expected pointer, found 'i32'",
});
cases.add("@shlExact shifts out 1 bits",
\\comptime {
\\ const x = @shlExact(@as(u8, 0b01010101), 2);
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: operation caused overflow",
});
cases.add("@shrExact shifts out 1 bits",
\\comptime {
\\ const x = @shrExact(@as(u8, 0b10101010), 2);
\\}
, &[_][]const u8{
"tmp.zig:2:15: error: exact shift shifted out 1 bits",
});
cases.add("shifting without int type or comptime known",
\\export fn entry(x: u8) u8 {
\\ return 0x11 << x;
\\}
, &[_][]const u8{
"tmp.zig:2:17: error: LHS of shift must be a fixed-width integer type, or RHS must be compile-time known",
});
cases.add("shifting RHS is log2 of LHS int bit width",
\\export fn entry(x: u8, y: u8) u8 {
\\ return x << y;
\\}
, &[_][]const u8{
"tmp.zig:2:17: error: expected type 'u3', found 'u8'",
});
cases.add("globally shadowing a primitive type",
\\const u16 = u8;
\\export fn entry() void {
\\ const a: u16 = 300;
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: declaration shadows primitive type 'u16'",
});
cases.add("implicitly increasing pointer alignment",
\\const Foo = packed struct {
\\ a: u8,
\\ b: u32,
\\};
\\
\\export fn entry() void {
\\ var foo = Foo { .a = 1, .b = 10 };
\\ bar(&foo.b);
\\}
\\
\\fn bar(x: *u32) void {
\\ x.* += 1;
\\}
, &[_][]const u8{
"tmp.zig:8:13: error: expected type '*u32', found '*align(1) u32'",
});
cases.add("implicitly increasing slice alignment",
\\const Foo = packed struct {
\\ a: u8,
\\ b: u32,
\\};
\\
\\export fn entry() void {
\\ var foo = Foo { .a = 1, .b = 10 };
\\ foo.b += 1;
\\ bar(@as(*[1]u32, &foo.b)[0..]);
\\}
\\
\\fn bar(x: []u32) void {
\\ x[0] += 1;
\\}
, &[_][]const u8{
"tmp.zig:9:26: error: cast increases pointer alignment",
"tmp.zig:9:26: note: '*align(1) u32' has alignment 1",
"tmp.zig:9:26: note: '*[1]u32' has alignment 4",
});
cases.add("increase pointer alignment in @ptrCast",
\\export fn entry() u32 {
\\ var bytes: [4]u8 = [_]u8{0x01, 0x02, 0x03, 0x04};
\\ const ptr = @ptrCast(*u32, &bytes[0]);
\\ return ptr.*;
\\}
, &[_][]const u8{
"tmp.zig:3:17: error: cast increases pointer alignment",
"tmp.zig:3:38: note: '*u8' has alignment 1",
"tmp.zig:3:26: note: '*u32' has alignment 4",
});
cases.add("@alignCast expects pointer or slice",
\\export fn entry() void {
\\ @alignCast(4, @as(u32, 3));
\\}
, &[_][]const u8{
"tmp.zig:2:19: error: expected pointer or slice, found 'u32'",
});
cases.add("passing an under-aligned function pointer",
\\export fn entry() void {
\\ testImplicitlyDecreaseFnAlign(alignedSmall, 1234);
\\}
\\fn testImplicitlyDecreaseFnAlign(ptr: fn () align(8) i32, answer: i32) void {
\\ if (ptr() != answer) unreachable;
\\}
\\fn alignedSmall() align(4) i32 { return 1234; }
, &[_][]const u8{
"tmp.zig:2:35: error: expected type 'fn() align(8) i32', found 'fn() align(4) i32'",
});
cases.add("passing a not-aligned-enough pointer to cmpxchg",
\\const AtomicOrder = @import("builtin").AtomicOrder;
\\export fn entry() bool {
\\ var x: i32 align(1) = 1234;
\\ while (!@cmpxchgWeak(i32, &x, 1234, 5678, AtomicOrder.SeqCst, AtomicOrder.SeqCst)) {}
\\ return x == 5678;
\\}
, &[_][]const u8{
"tmp.zig:4:32: error: expected type '*i32', found '*align(1) i32'",
});
cases.add("wrong size to an array literal",
\\comptime {
\\ const array = [2]u8{1, 2, 3};
\\}
, &[_][]const u8{
"tmp.zig:2:31: error: index 2 outside array of size 2",
});
cases.add("wrong pointer coerced to pointer to @Type(.Opaque)",
\\const Derp = @Type(.Opaque);
\\extern fn bar(d: *Derp) void;
\\export fn foo() void {
\\ var x = @as(u8, 1);
\\ bar(@ptrCast(*c_void, &x));
\\}
, &[_][]const u8{
"tmp.zig:5:9: error: expected type '*Derp', found '*c_void'",
});
cases.add("non-const variables of things that require const variables",
\\export fn entry1() void {
\\ var m2 = &2;
\\}
\\export fn entry2() void {
\\ var a = undefined;
\\}
\\export fn entry3() void {
\\ var b = 1;
\\}
\\export fn entry4() void {
\\ var c = 1.0;
\\}
\\export fn entry5() void {
\\ var d = null;
\\}
\\export fn entry6(opaque: *Opaque) void {
\\ var e = opaque.*;
\\}
\\export fn entry7() void {
\\ var f = i32;
\\}
\\export fn entry8() void {
\\ var h = (Foo {}).bar;
\\}
\\export fn entry9() void {
\\ var z: noreturn = return;
\\}
\\const Opaque = @Type(.Opaque);
\\const Foo = struct {
\\ fn bar(self: *const Foo) void {}
\\};
, &[_][]const u8{
"tmp.zig:2:4: error: variable of type '*const comptime_int' must be const or comptime",
"tmp.zig:5:4: error: variable of type '(undefined)' must be const or comptime",
"tmp.zig:8:4: error: variable of type 'comptime_int' must be const or comptime",
"tmp.zig:11:4: error: variable of type 'comptime_float' must be const or comptime",
"tmp.zig:14:4: error: variable of type '(null)' must be const or comptime",
"tmp.zig:17:4: error: variable of type 'Opaque' not allowed",
"tmp.zig:20:4: error: variable of type 'type' must be const or comptime",
"tmp.zig:23:4: error: variable of type '(bound fn(*const Foo) void)' must be const or comptime",
"tmp.zig:26:22: error: unreachable code",
});
cases.add("wrong types given to atomic order args in cmpxchg",
\\export fn entry() void {
\\ var x: i32 = 1234;
\\ while (!@cmpxchgWeak(i32, &x, 1234, 5678, @as(u32, 1234), @as(u32, 1234))) {}
\\}
, &[_][]const u8{
"tmp.zig:3:47: error: expected type 'std.builtin.AtomicOrder', found 'u32'",
});
cases.add("wrong types given to @export",
\\fn entry() callconv(.C) void { }
\\comptime {
\\ @export(entry, .{.name = "entry", .linkage = @as(u32, 1234) });
\\}
, &[_][]const u8{
"tmp.zig:3:59: error: expected type 'std.builtin.GlobalLinkage', found 'comptime_int'",
});
cases.add("struct with invalid field",
\\const std = @import("std",);
\\const Allocator = std.mem.Allocator;
\\const ArrayList = std.ArrayList;
\\
\\const HeaderWeight = enum {
\\ H1, H2, H3, H4, H5, H6,
\\};
\\
\\const MdText = ArrayList(u8);
\\
\\const MdNode = union(enum) {
\\ Header: struct {
\\ text: MdText,
\\ weight: HeaderValue,
\\ },
\\};
\\
\\export fn entry() void {
\\ const a = MdNode.Header {
\\ .text = MdText.init(&std.testing.allocator),
\\ .weight = HeaderWeight.H1,
\\ };
\\}
, &[_][]const u8{
"tmp.zig:14:17: error: use of undeclared identifier 'HeaderValue'",
});
cases.add("@setAlignStack outside function",
\\comptime {
\\ @setAlignStack(16);
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: @setAlignStack outside function",
});
cases.add("@setAlignStack in naked function",
\\export fn entry() callconv(.Naked) void {
\\ @setAlignStack(16);
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: @setAlignStack in naked function",
});
cases.add("@setAlignStack in inline function",
\\export fn entry() void {
\\ foo();
\\}
\\inline fn foo() void {
\\ @setAlignStack(16);
\\}
, &[_][]const u8{
"tmp.zig:5:5: error: @setAlignStack in inline function",
});
cases.add("@setAlignStack set twice",
\\export fn entry() void {
\\ @setAlignStack(16);
\\ @setAlignStack(16);
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: alignstack set twice",
"tmp.zig:2:5: note: first set here",
});
cases.add("@setAlignStack too big",
\\export fn entry() void {
\\ @setAlignStack(511 + 1);
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: attempt to @setAlignStack(512); maximum is 256",
});
cases.add("storing runtime value in compile time variable then using it",
\\const Mode = @import("builtin").Mode;
\\
\\fn Free(comptime filename: []const u8) TestCase {
\\ return TestCase {
\\ .filename = filename,
\\ .problem_type = ProblemType.Free,
\\ };
\\}
\\
\\fn LibC(comptime filename: []const u8) TestCase {
\\ return TestCase {
\\ .filename = filename,
\\ .problem_type = ProblemType.LinkLibC,
\\ };
\\}
\\
\\const TestCase = struct {
\\ filename: []const u8,
\\ problem_type: ProblemType,
\\};
\\
\\const ProblemType = enum {
\\ Free,
\\ LinkLibC,
\\};
\\
\\export fn entry() void {
\\ const tests = [_]TestCase {
\\ Free("001"),
\\ Free("002"),
\\ LibC("078"),
\\ Free("116"),
\\ Free("117"),
\\ };
\\
\\ for ([_]Mode { Mode.Debug, Mode.ReleaseSafe, Mode.ReleaseFast }) |mode| {
\\ inline for (tests) |test_case| {
\\ const foo = test_case.filename ++ ".zig";
\\ }
\\ }
\\}
, &[_][]const u8{
"tmp.zig:37:29: error: cannot store runtime value in compile time variable",
});
cases.add("field access of opaque type",
\\const MyType = @Type(.Opaque);
\\
\\export fn entry() bool {
\\ var x: i32 = 1;
\\ return bar(@ptrCast(*MyType, &x));
\\}
\\
\\fn bar(x: *MyType) bool {
\\ return x.blah;
\\}
, &[_][]const u8{
"tmp.zig:9:13: error: type '*MyType' does not support field access",
});
cases.add("carriage return special case", "fn test() bool {\r\n" ++
" true\r\n" ++
"}\r\n", &[_][]const u8{
"tmp.zig:1:17: error: invalid carriage return, only '\\n' line endings are supported",
});
cases.add("invalid legacy unicode escape",
\\export fn entry() void {
\\ const a = '\U1234';
\\}
, &[_][]const u8{
"tmp.zig:2:17: error: invalid character: 'U'",
});
cases.add("invalid empty unicode escape",
\\export fn entry() void {
\\ const a = '\u{}';
\\}
, &[_][]const u8{
"tmp.zig:2:19: error: empty unicode escape sequence",
});
cases.add("non-printable invalid character", "\xff\xfe" ++
\\fn test() bool {\r
\\ true\r
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: invalid character: '\\xff'",
});
cases.add("non-printable invalid character with escape alternative", "fn test() bool {\n" ++
"\ttrue\n" ++
"}\n", &[_][]const u8{
"tmp.zig:2:1: error: invalid character: '\\t'",
});
cases.add("calling var args extern function, passing array instead of pointer",
\\export fn entry() void {
\\ foo("hello".*,);
\\}
\\pub extern fn foo(format: *const u8, ...) void;
, &[_][]const u8{
"tmp.zig:2:16: error: expected type '*const u8', found '[5:0]u8'",
});
cases.add("constant inside comptime function has compile error",
\\const ContextAllocator = MemoryPool(usize);
\\
\\pub fn MemoryPool(comptime T: type) type {
\\ const free_list_t = @compileError("aoeu",);
\\
\\ return struct {
\\ free_list: free_list_t,
\\ };
\\}
\\
\\export fn entry() void {
\\ var allocator: ContextAllocator = undefined;
\\}
, &[_][]const u8{
"tmp.zig:4:25: error: aoeu",
"tmp.zig:1:36: note: referenced here",
"tmp.zig:12:20: note: referenced here",
});
cases.add("specify enum tag type that is too small",
\\const Small = enum (u2) {
\\ One,
\\ Two,
\\ Three,
\\ Four,
\\ Five,
\\};
\\
\\export fn entry() void {
\\ var x = Small.One;
\\}
, &[_][]const u8{
"tmp.zig:6:5: error: enumeration value 4 too large for type 'u2'",
});
cases.add("specify non-integer enum tag type",
\\const Small = enum (f32) {
\\ One,
\\ Two,
\\ Three,
\\};
\\
\\export fn entry() void {
\\ var x = Small.One;
\\}
, &[_][]const u8{
"tmp.zig:1:21: error: expected integer, found 'f32'",
});
cases.add("implicitly casting enum to tag type",
\\const Small = enum(u2) {
\\ One,
\\ Two,
\\ Three,
\\ Four,
\\};
\\
\\export fn entry() void {
\\ var x: u2 = Small.Two;
\\}
, &[_][]const u8{
"tmp.zig:9:22: error: expected type 'u2', found 'Small'",
});
cases.add("explicitly casting non tag type to enum",
\\const Small = enum(u2) {
\\ One,
\\ Two,
\\ Three,
\\ Four,
\\};
\\
\\export fn entry() void {
\\ var y = @as(u3, 3);
\\ var x = @intToEnum(Small, y);
\\}
, &[_][]const u8{
"tmp.zig:10:31: error: expected type 'u2', found 'u3'",
});
cases.add("union fields with value assignments",
\\const MultipleChoice = union {
\\ A: i32 = 20,
\\};
\\export fn entry() void {
\\ var x: MultipleChoice = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:14: error: untagged union field assignment",
"tmp.zig:1:24: note: consider 'union(enum)' here",
});
cases.add("enum with 0 fields",
\\const Foo = enum {};
\\export fn entry() usize {
\\ return @sizeOf(Foo);
\\}
, &[_][]const u8{
"tmp.zig:1:13: error: enums must have 1 or more fields",
});
cases.add("union with 0 fields",
\\const Foo = union {};
\\export fn entry() usize {
\\ return @sizeOf(Foo);
\\}
, &[_][]const u8{
"tmp.zig:1:13: error: unions must have 1 or more fields",
});
cases.add("enum value already taken",
\\const MultipleChoice = enum(u32) {
\\ A = 20,
\\ B = 40,
\\ C = 60,
\\ D = 1000,
\\ E = 60,
\\};
\\export fn entry() void {
\\ var x = MultipleChoice.C;
\\}
, &[_][]const u8{
"tmp.zig:6:5: error: enum tag value 60 already taken",
"tmp.zig:4:5: note: other occurrence here",
});
cases.add("union with specified enum omits field",
\\const Letter = enum {
\\ A,
\\ B,
\\ C,
\\};
\\const Payload = union(Letter) {
\\ A: i32,
\\ B: f64,
\\};
\\export fn entry() usize {
\\ return @sizeOf(Payload);
\\}
, &[_][]const u8{
"tmp.zig:6:17: error: enum field missing: 'C'",
"tmp.zig:4:5: note: declared here",
});
cases.add("@TagType when union has no attached enum",
\\const Foo = union {
\\ A: i32,
\\};
\\export fn entry() void {
\\ const x = @TagType(Foo);
\\}
, &[_][]const u8{
"tmp.zig:5:24: error: union 'Foo' has no tag",
"tmp.zig:1:13: note: consider 'union(enum)' here",
});
cases.add("non-integer tag type to automatic union enum",
\\const Foo = union(enum(f32)) {
\\ A: i32,
\\};
\\export fn entry() void {
\\ const x = @TagType(Foo);
\\}
, &[_][]const u8{
"tmp.zig:1:24: error: expected integer tag type, found 'f32'",
});
cases.add("non-enum tag type passed to union",
\\const Foo = union(u32) {
\\ A: i32,
\\};
\\export fn entry() void {
\\ const x = @TagType(Foo);
\\}
, &[_][]const u8{
"tmp.zig:1:19: error: expected enum tag type, found 'u32'",
});
cases.add("union auto-enum value already taken",
\\const MultipleChoice = union(enum(u32)) {
\\ A = 20,
\\ B = 40,
\\ C = 60,
\\ D = 1000,
\\ E = 60,
\\};
\\export fn entry() void {
\\ var x = MultipleChoice { .C = {} };
\\}
, &[_][]const u8{
"tmp.zig:6:9: error: enum tag value 60 already taken",
"tmp.zig:4:9: note: other occurrence here",
});
cases.add("union enum field does not match enum",
\\const Letter = enum {
\\ A,
\\ B,
\\ C,
\\};
\\const Payload = union(Letter) {
\\ A: i32,
\\ B: f64,
\\ C: bool,
\\ D: bool,
\\};
\\export fn entry() void {
\\ var a = Payload {.A = 1234};
\\}
, &[_][]const u8{
"tmp.zig:10:5: error: enum field not found: 'D'",
"tmp.zig:1:16: note: enum declared here",
});
cases.add("field type supplied in an enum",
\\const Letter = enum {
\\ A: void,
\\ B,
\\ C,
\\};
\\export fn entry() void {
\\ var b = Letter.B;
\\}
, &[_][]const u8{
"tmp.zig:2:8: error: structs and unions, not enums, support field types",
"tmp.zig:1:16: note: consider 'union(enum)' here",
});
cases.add("struct field missing type",
\\const Letter = struct {
\\ A,
\\};
\\export fn entry() void {
\\ var a = Letter { .A = {} };
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: struct field missing type",
});
cases.add("extern union field missing type",
\\const Letter = extern union {
\\ A,
\\};
\\export fn entry() void {
\\ var a = Letter { .A = {} };
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: union field missing type",
});
cases.add("extern union given enum tag type",
\\const Letter = enum {
\\ A,
\\ B,
\\ C,
\\};
\\const Payload = extern union(Letter) {
\\ A: i32,
\\ B: f64,
\\ C: bool,
\\};
\\export fn entry() void {
\\ var a = Payload { .A = 1234 };
\\}
, &[_][]const u8{
"tmp.zig:6:30: error: extern union does not support enum tag type",
});
cases.add("packed union given enum tag type",
\\const Letter = enum {
\\ A,
\\ B,
\\ C,
\\};
\\const Payload = packed union(Letter) {
\\ A: i32,
\\ B: f64,
\\ C: bool,
\\};
\\export fn entry() void {
\\ var a = Payload { .A = 1234 };
\\}
, &[_][]const u8{
"tmp.zig:6:30: error: packed union does not support enum tag type",
});
cases.add("packed union with automatic layout field",
\\const Foo = struct {
\\ a: u32,
\\ b: f32,
\\};
\\const Payload = packed union {
\\ A: Foo,
\\ B: bool,
\\};
\\export fn entry() void {
\\ var a = Payload { .B = true };
\\}
, &[_][]const u8{
"tmp.zig:6:5: error: non-packed, non-extern struct 'Foo' not allowed in packed union; no guaranteed in-memory representation",
});
cases.add("switch on union with no attached enum",
\\const Payload = union {
\\ A: i32,
\\ B: f64,
\\ C: bool,
\\};
\\export fn entry() void {
\\ const a = Payload { .A = 1234 };
\\ foo(a);
\\}
\\fn foo(a: *const Payload) void {
\\ switch (a.*) {
\\ Payload.A => {},
\\ else => unreachable,
\\ }
\\}
, &[_][]const u8{
"tmp.zig:11:14: error: switch on union which has no attached enum",
"tmp.zig:1:17: note: consider 'union(enum)' here",
});
cases.add("enum in field count range but not matching tag",
\\const Foo = enum(u32) {
\\ A = 10,
\\ B = 11,
\\};
\\export fn entry() void {
\\ var x = @intToEnum(Foo, 0);
\\}
, &[_][]const u8{
"tmp.zig:6:13: error: enum 'Foo' has no tag matching integer value 0",
"tmp.zig:1:13: note: 'Foo' declared here",
});
cases.add("comptime cast enum to union but field has payload",
\\const Letter = enum { A, B, C };
\\const Value = union(Letter) {
\\ A: i32,
\\ B,
\\ C,
\\};
\\export fn entry() void {
\\ var x: Value = Letter.A;
\\}
, &[_][]const u8{
"tmp.zig:8:26: error: cast to union 'Value' must initialize 'i32' field 'A'",
"tmp.zig:3:5: note: field 'A' declared here",
});
cases.add("runtime cast to union which has non-void fields",
\\const Letter = enum { A, B, C };
\\const Value = union(Letter) {
\\ A: i32,
\\ B,
\\ C,
\\};
\\export fn entry() void {
\\ foo(Letter.A);
\\}
\\fn foo(l: Letter) void {
\\ var x: Value = l;
\\}
, &[_][]const u8{
"tmp.zig:11:20: error: runtime cast to union 'Value' which has non-void fields",
"tmp.zig:3:5: note: field 'A' has type 'i32'",
});
cases.add("taking byte offset of void field in struct",
\\const Empty = struct {
\\ val: void,
\\};
\\export fn foo() void {
\\ const fieldOffset = @byteOffsetOf(Empty, "val",);
\\}
, &[_][]const u8{
"tmp.zig:5:46: error: zero-bit field 'val' in struct 'Empty' has no offset",
});
cases.add("taking bit offset of void field in struct",
\\const Empty = struct {
\\ val: void,
\\};
\\export fn foo() void {
\\ const fieldOffset = @bitOffsetOf(Empty, "val",);
\\}
, &[_][]const u8{
"tmp.zig:5:45: error: zero-bit field 'val' in struct 'Empty' has no offset",
});
cases.add("invalid union field access in comptime",
\\const Foo = union {
\\ Bar: u8,
\\ Baz: void,
\\};
\\comptime {
\\ var foo = Foo {.Baz = {}};
\\ const bar_val = foo.Bar;
\\}
, &[_][]const u8{
"tmp.zig:7:24: error: accessing union field 'Bar' while field 'Baz' is set",
});
cases.add("getting return type of generic function",
\\fn generic(a: anytype) void {}
\\comptime {
\\ _ = @TypeOf(generic).ReturnType;
\\}
, &[_][]const u8{
"tmp.zig:3:25: error: ReturnType has not been resolved because 'fn(anytype) anytype' is generic",
});
cases.add("unsupported modifier at start of asm output constraint",
\\export fn foo() void {
\\ var bar: u32 = 3;
\\ asm volatile ("" : [baz]"+r"(bar) : : "");
\\}
, &[_][]const u8{
"tmp.zig:3:5: error: invalid modifier starting output constraint for 'baz': '+', only '=' is supported. Compiler TODO: see https://github.com/ziglang/zig/issues/215",
});
cases.add("comptime_int in asm input",
\\export fn foo() void {
\\ asm volatile ("" : : [bar]"r"(3) : "");
\\}
, &[_][]const u8{
"tmp.zig:2:35: error: expected sized integer or sized float, found comptime_int",
});
cases.add("comptime_float in asm input",
\\export fn foo() void {
\\ asm volatile ("" : : [bar]"r"(3.17) : "");
\\}
, &[_][]const u8{
"tmp.zig:2:35: error: expected sized integer or sized float, found comptime_float",
});
cases.add("runtime assignment to comptime struct type",
\\const Foo = struct {
\\ Bar: u8,
\\ Baz: type,
\\};
\\export fn f() void {
\\ var x: u8 = 0;
\\ const foo = Foo { .Bar = x, .Baz = u8 };
\\}
, &[_][]const u8{
"tmp.zig:7:23: error: unable to evaluate constant expression",
});
cases.add("runtime assignment to comptime union type",
\\const Foo = union {
\\ Bar: u8,
\\ Baz: type,
\\};
\\export fn f() void {
\\ var x: u8 = 0;
\\ const foo = Foo { .Bar = x };
\\}
, &[_][]const u8{
"tmp.zig:7:23: error: unable to evaluate constant expression",
});
cases.addTest("@shuffle with selected index past first vector length",
\\export fn entry() void {
\\ const v: @import("std").meta.Vector(4, u32) = [4]u32{ 10, 11, 12, 13 };
\\ const x: @import("std").meta.Vector(4, u32) = [4]u32{ 14, 15, 16, 17 };
\\ var z = @shuffle(u32, v, x, [8]i32{ 0, 1, 2, 3, 7, 6, 5, 4 });
\\}
, &[_][]const u8{
"tmp.zig:4:39: error: mask index '4' has out-of-bounds selection",
"tmp.zig:4:27: note: selected index '7' out of bounds of @Vector(4, u32)",
"tmp.zig:4:30: note: selections from the second vector are specified with negative numbers",
});
cases.addTest("nested vectors",
\\export fn entry() void {
\\ const V1 = @import("std").meta.Vector(4, u8);
\\ const V2 = @Type(@import("builtin").TypeInfo{ .Vector = .{ .len = 4, .child = V1 } });
\\ var v: V2 = undefined;
\\}
, &[_][]const u8{
"tmp.zig:3:49: error: vector element type must be integer, float, bool, or pointer; '@Vector(4, u8)' is invalid",
"tmp.zig:3:16: note: referenced here",
});
cases.addTest("bad @splat type",
\\export fn entry() void {
\\ const c = 4;
\\ var v = @splat(4, c);
\\}
, &[_][]const u8{
"tmp.zig:3:23: error: vector element type must be integer, float, bool, or pointer; 'comptime_int' is invalid",
});
cases.add("compileLog of tagged enum doesn't crash the compiler",
\\const Bar = union(enum(u32)) {
\\ X: i32 = 1
\\};
\\
\\fn testCompileLog(x: Bar) void {
\\ @compileLog(x);
\\}
\\
\\pub fn main () void {
\\ comptime testCompileLog(Bar{.X = 123});
\\}
, &[_][]const u8{
"tmp.zig:6:5: error: found compile log statement",
});
cases.add("attempted implicit cast from *const T to *[1]T",
\\export fn entry(byte: u8) void {
\\ const w: i32 = 1234;
\\ var x: *const i32 = &w;
\\ var y: *[1]i32 = x;
\\ y[0] += 1;
\\}
, &[_][]const u8{
"tmp.zig:4:22: error: expected type '*[1]i32', found '*const i32'",
"tmp.zig:4:22: note: cast discards const qualifier",
});
cases.add("attempted implicit cast from *const T to []T",
\\export fn entry() void {
\\ const u: u32 = 42;
\\ const x: []u32 = &u;
\\}
, &[_][]const u8{
"tmp.zig:3:23: error: expected type '[]u32', found '*const u32'",
});
cases.add("for loop body expression ignored",
\\fn returns() usize {
\\ return 2;
\\}
\\export fn f1() void {
\\ for ("hello") |_| returns();
\\}
\\export fn f2() void {
\\ var x: anyerror!i32 = error.Bad;
\\ for ("hello") |_| returns() else unreachable;
\\}
, &[_][]const u8{
"tmp.zig:5:30: error: expression value is ignored",
"tmp.zig:9:30: error: expression value is ignored",
});
cases.add("aligned variable of zero-bit type",
\\export fn f() void {
\\ var s: struct {} align(4) = undefined;
\\}
, &[_][]const u8{
"tmp.zig:2:5: error: variable 's' of zero-bit type 'struct:2:12' has no in-memory representation, it cannot be aligned",
});
cases.add("function returning opaque type",
\\const FooType = @Type(.Opaque);
\\export fn bar() !FooType {
\\ return error.InvalidValue;
\\}
\\export fn bav() !@TypeOf(null) {
\\ return error.InvalidValue;
\\}
\\export fn baz() !@TypeOf(undefined) {
\\ return error.InvalidValue;
\\}
, &[_][]const u8{
"tmp.zig:2:18: error: Opaque return type 'FooType' not allowed",
"tmp.zig:1:1: note: type declared here",
"tmp.zig:5:18: error: Null return type '(null)' not allowed",
"tmp.zig:8:18: error: Undefined return type '(undefined)' not allowed",
});
cases.add("generic function returning opaque type",
\\const FooType = @Type(.Opaque);
\\fn generic(comptime T: type) !T {
\\ return undefined;
\\}
\\export fn bar() void {
\\ _ = generic(FooType);
\\}
\\export fn bav() void {
\\ _ = generic(@TypeOf(null));
\\}
\\export fn baz() void {
\\ _ = generic(@TypeOf(undefined));
\\}
, &[_][]const u8{
"tmp.zig:6:16: error: call to generic function with Opaque return type 'FooType' not allowed",
"tmp.zig:2:1: note: function declared here",
"tmp.zig:1:1: note: type declared here",
"tmp.zig:9:16: error: call to generic function with Null return type '(null)' not allowed",
"tmp.zig:2:1: note: function declared here",
"tmp.zig:12:16: error: call to generic function with Undefined return type '(undefined)' not allowed",
"tmp.zig:2:1: note: function declared here",
});
cases.add("function parameter is opaque",
\\const FooType = @OpaqueType();
\\export fn entry1() void {
\\ const someFuncPtr: fn (FooType) void = undefined;
\\}
\\
\\export fn entry2() void {
\\ const someFuncPtr: fn (@TypeOf(null)) void = undefined;
\\}
\\
\\fn foo(p: FooType) void {}
\\export fn entry3() void {
\\ _ = foo;
\\}
\\
\\fn bar(p: @TypeOf(null)) void {}
\\export fn entry4() void {
\\ _ = bar;
\\}
, &[_][]const u8{
"tmp.zig:3:28: error: parameter of opaque type 'FooType' not allowed",
"tmp.zig:7:28: error: parameter of type '(null)' not allowed",
"tmp.zig:10:11: error: parameter of opaque type 'FooType' not allowed",
"tmp.zig:15:11: error: parameter of type '(null)' not allowed",
});
cases.add( // fixed bug #2032
"compile diagnostic string for top level decl type",
\\export fn entry() void {
\\ var foo: u32 = @This(){};
\\}
, &[_][]const u8{
"tmp.zig:2:27: error: type 'u32' does not support array initialization",
});
cases.add("issue #2687: coerce from undefined array pointer to slice",
\\export fn foo1() void {
\\ const a: *[1]u8 = undefined;
\\ var b: []u8 = a;
\\}
\\export fn foo2() void {
\\ comptime {
\\ var a: *[1]u8 = undefined;
\\ var b: []u8 = a;
\\ }
\\}
\\export fn foo3() void {
\\ comptime {
\\ const a: *[1]u8 = undefined;
\\ var b: []u8 = a;
\\ }
\\}
, &[_][]const u8{
"tmp.zig:3:19: error: use of undefined value here causes undefined behavior",
"tmp.zig:8:23: error: use of undefined value here causes undefined behavior",
"tmp.zig:14:23: error: use of undefined value here causes undefined behavior",
});
cases.add("issue #3818: bitcast from parray/slice to u16",
\\export fn foo1() void {
\\ var bytes = [_]u8{1, 2};
\\ const word: u16 = @bitCast(u16, bytes[0..]);
\\}
\\export fn foo2() void {
\\ var bytes: []const u8 = &[_]u8{1, 2};
\\ const word: u16 = @bitCast(u16, bytes);
\\}
, &[_][]const u8{
"tmp.zig:3:42: error: unable to @bitCast from pointer type '*[2]u8'",
"tmp.zig:7:32: error: destination type 'u16' has size 2 but source type '[]const u8' has size 16",
"tmp.zig:7:37: note: referenced here",
});
cases.add("comptime slice-sentinel is out of bounds (unterminated)",
\\export fn foo_array() void {
\\ comptime {
\\ var target = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_ptr_array() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target = &buf;
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = &buf;
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = @ptrCast([*]u8, &buf);
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = &buf;
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = @ptrCast([*c]u8, &buf);
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_slice() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: []u8 = &buf;
\\ const slice = target[0..14 :0];
\\ }
\\}
, &[_][]const u8{
":4:29: error: slice-sentinel is out of bounds",
":11:29: error: slice-sentinel is out of bounds",
":18:29: error: slice-sentinel is out of bounds",
":25:29: error: slice-sentinel is out of bounds",
":32:29: error: slice-sentinel is out of bounds",
":39:29: error: slice-sentinel is out of bounds",
":46:29: error: slice-sentinel is out of bounds",
});
cases.add("comptime slice-sentinel is out of bounds (terminated)",
\\export fn foo_array() void {
\\ comptime {
\\ var target = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ const slice = target[0..15 :1];
\\ }
\\}
\\export fn foo_ptr_array() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target = &buf;
\\ const slice = target[0..15 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = &buf;
\\ const slice = target[0..15 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = @ptrCast([*]u8, &buf);
\\ const slice = target[0..15 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = &buf;
\\ const slice = target[0..15 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = @ptrCast([*c]u8, &buf);
\\ const slice = target[0..15 :0];
\\ }
\\}
\\export fn foo_slice() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: []u8 = &buf;
\\ const slice = target[0..15 :0];
\\ }
\\}
, &[_][]const u8{
":4:29: error: out of bounds slice",
":11:29: error: out of bounds slice",
":18:29: error: out of bounds slice",
":25:29: error: out of bounds slice",
":32:29: error: out of bounds slice",
":39:29: error: out of bounds slice",
":46:29: error: out of bounds slice",
});
cases.add("comptime slice-sentinel does not match memory at target index (unterminated)",
\\export fn foo_array() void {
\\ comptime {
\\ var target = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_ptr_array() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = @ptrCast([*]u8, &buf);
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = @ptrCast([*c]u8, &buf);
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_slice() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: []u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
, &[_][]const u8{
":4:29: error: slice-sentinel does not match memory at target index",
":11:29: error: slice-sentinel does not match memory at target index",
":18:29: error: slice-sentinel does not match memory at target index",
":25:29: error: slice-sentinel does not match memory at target index",
":32:29: error: slice-sentinel does not match memory at target index",
":39:29: error: slice-sentinel does not match memory at target index",
":46:29: error: slice-sentinel does not match memory at target index",
});
cases.add("comptime slice-sentinel does not match memory at target index (terminated)",
\\export fn foo_array() void {
\\ comptime {
\\ var target = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_ptr_array() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = @ptrCast([*]u8, &buf);
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = @ptrCast([*c]u8, &buf);
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_slice() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: []u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
, &[_][]const u8{
":4:29: error: slice-sentinel does not match memory at target index",
":11:29: error: slice-sentinel does not match memory at target index",
":18:29: error: slice-sentinel does not match memory at target index",
":25:29: error: slice-sentinel does not match memory at target index",
":32:29: error: slice-sentinel does not match memory at target index",
":39:29: error: slice-sentinel does not match memory at target index",
":46:29: error: slice-sentinel does not match memory at target index",
});
cases.add("comptime slice-sentinel does not match target-sentinel",
\\export fn foo_array() void {
\\ comptime {
\\ var target = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_ptr_array() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target = &buf;
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = &buf;
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = @ptrCast([*]u8, &buf);
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = &buf;
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = @ptrCast([*c]u8, &buf);
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_slice() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: []u8 = &buf;
\\ const slice = target[0..14 :255];
\\ }
\\}
, &[_][]const u8{
":4:29: error: slice-sentinel does not match target-sentinel",
":11:29: error: slice-sentinel does not match target-sentinel",
":18:29: error: slice-sentinel does not match target-sentinel",
":25:29: error: slice-sentinel does not match target-sentinel",
":32:29: error: slice-sentinel does not match target-sentinel",
":39:29: error: slice-sentinel does not match target-sentinel",
":46:29: error: slice-sentinel does not match target-sentinel",
});
cases.add("issue #4207: coerce from non-terminated-slice to terminated-pointer",
\\export fn foo() [*:0]const u8 {
\\ var buffer: [64]u8 = undefined;
\\ return buffer[0..];
\\}
, &[_][]const u8{
":3:18: error: expected type '[*:0]const u8', found '*[64]u8'",
":3:18: note: destination pointer requires a terminating '0' sentinel",
});
cases.add("issue #5221: invalid struct init type referenced by @typeInfo and passed into function",
\\fn ignore(comptime param: anytype) void {}
\\
\\export fn foo() void {
\\ const MyStruct = struct {
\\ wrong_type: []u8 = "foo",
\\ };
\\
\\ comptime ignore(@typeInfo(MyStruct).Struct.fields[0]);
\\}
, &[_][]const u8{
":5:28: error: expected type '[]u8', found '*const [3:0]u8'",
});
cases.add("integer underflow error",
\\export fn entry() void {
\\ _ = @intToPtr(*c_void, ~@as(usize, @import("std").math.maxInt(usize)) - 1);
\\}
, &[_][]const u8{
":2:75: error: operation caused overflow",
});
cases.addCase(x: {
var tc = cases.create("align(N) expr function pointers is a compile error",
\\export fn foo() align(1) void {
\\ return;
\\}
, &[_][]const u8{
"tmp.zig:1:23: error: align(N) expr is not allowed on function prototypes in wasm32/wasm64",
});
tc.target = std.zig.CrossTarget{
.cpu_arch = .wasm32,
.os_tag = .freestanding,
.abi = .none,
};
break :x tc;
});
cases.add("compare optional to non-optional with invalid types",
\\export fn inconsistentChildType() void {
\\ var x: ?i32 = undefined;
\\ const y: comptime_int = 10;
\\ _ = (x == y);
\\}
\\
\\export fn optionalToOptional() void {
\\ var x: ?i32 = undefined;
\\ var y: ?i32 = undefined;
\\ _ = (x == y);
\\}
\\
\\export fn optionalVector() void {
\\ var x: ?@Vector(10, i32) = undefined;
\\ var y: @Vector(10, i32) = undefined;
\\ _ = (x == y);
\\}
\\
\\export fn invalidChildType() void {
\\ var x: ?[3]i32 = undefined;
\\ var y: [3]i32 = undefined;
\\ _ = (x == y);
\\}
, &[_][]const u8{
":4:12: error: cannot compare types '?i32' and 'comptime_int'",
":4:12: note: optional child type 'i32' must be the same as non-optional type 'comptime_int'",
":10:12: error: cannot compare types '?i32' and '?i32'",
":10:12: note: optional to optional comparison is only supported for optional pointer types",
":16:12: error: TODO add comparison of optional vector",
":22:12: error: cannot compare types '?[3]i32' and '[3]i32'",
":22:12: note: operator not supported for type '[3]i32'",
});
cases.add("slice cannot have its bytes reinterpreted",
\\export fn foo() void {
\\ const bytes = [1]u8{ 0xfa } ** 16;
\\ var value = @ptrCast(*const []const u8, &bytes).*;
\\}
, &[_][]const u8{
":3:52: error: slice '[]const u8' cannot have its bytes reinterpreted",
});
cases.add("wasmMemorySize is a compile error in non-Wasm targets",
\\export fn foo() void {
\\ _ = @wasmMemorySize(0);
\\ return;
\\}
, &[_][]const u8{
"tmp.zig:2:9: error: @wasmMemorySize is a wasm32 feature only",
});
cases.add("wasmMemoryGrow is a compile error in non-Wasm targets",
\\export fn foo() void {
\\ _ = @wasmMemoryGrow(0, 1);
\\ return;
\\}
, &[_][]const u8{
"tmp.zig:2:9: error: @wasmMemoryGrow is a wasm32 feature only",
});
cases.add("Issue #5586: Make unary minus for unsigned types a compile error",
\\export fn f(x: u32) u32 {
\\ const y = -%x;
\\ return -y;
\\}
, &[_][]const u8{
"tmp.zig:3:12: error: negation of type 'u32'",
});
cases.add("Issue #5618: coercion of ?*c_void to *c_void must fail.",
\\export fn foo() void {
\\ var u: ?*c_void = null;
\\ var v: *c_void = undefined;
\\ v = u;
\\}
, &[_][]const u8{
"tmp.zig:4:9: error: expected type '*c_void', found '?*c_void'",
});
}
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